Types of Egg Incubator Controllers
An egg incubator controller is the central nervous system of any incubation setup, responsible for regulating temperature, humidity, and ventilation to ensure optimal embryo development. With advancements in automation and precision agriculture, modern controllers offer varying degrees of accuracy, user-friendliness, and connectivity. Choosing the right controller can significantly impact hatch rates, chick health, and operational efficiency.
Analog Controllers
These are the earliest forms of incubator controls, relying on mechanical thermostats such as bimetallic strips or mercury switches to monitor and regulate temperature.
Advantages
- Simple mechanical design with no software dependencies
- Low cost and minimal maintenance
- Reliable in environments with power fluctuations
Limitations
- Limited precision and frequent temperature drifts
- No humidity or ventilation control
- Manual adjustments required; prone to user error
Best for: Small-scale hobbyists, educational setups, or backup systems
Basic Digital Controllers
Equipped with digital displays and electronic sensors (like thermistors), these controllers allow precise input of temperature and humidity setpoints.
Advantages
- Improved accuracy over analog systems
- User-friendly interface with clear readouts
- Affordable and widely available
- Some models include basic alarms or timers
Limitations
- Limited feedback control; may cause overshooting
- Few advanced features like data logging
- May lack automatic fan or misting control
Best for: Home incubators, beginner poultry farmers, small hatcheries
PID Controllers
Using Proportional-Integral-Derivative algorithms, these advanced controllers continuously adjust heating and cooling outputs based on real-time sensor feedback to minimize temperature deviations.
Advantages
- Exceptional temperature stability (±0.1°C)
- Reduces thermal overshoot and oscillation
- Highly reliable for consistent hatch results
- Often includes humidity and fan control integration
Limitations
- Higher cost compared to basic models
- Requires proper tuning for optimal performance
- Steeper learning curve for new users
Best for: Commercial hatcheries, research labs, high-value egg incubation
Hybrid Controllers
Combining analog simplicity with digital precision, hybrid controllers offer manual override options alongside digital monitoring and basic automation.
Advantages
- Balances ease of use with improved accuracy
- Good for transitioning from analog to digital
- Often more robust in variable power conditions
Limitations
- May lack full automation capabilities
- Not as precise as dedicated digital or PID systems
- Less common in modern commercial units
Best for: Mid-sized farms, users needing reliability with some automation
Wireless/Smart Controllers
These represent the cutting edge of incubation technology, featuring Wi-Fi or Bluetooth connectivity, mobile apps, cloud storage, and remote monitoring capabilities.
Advantages
- Remote access and real-time alerts via smartphone
- Data logging and historical performance tracking
- Integration with multiple sensors (temp, humidity, CO₂)
- Automated reports and predictive analytics
Limitations
- Dependent on stable internet and power supply
- Potential cybersecurity or connectivity issues
- Premium pricing and subscription services may apply
Best for: Large-scale commercial operations, automated farms, research institutions
| Controller Type | Precision | User-Friendliness | Automation Level | Best Use Case |
|---|---|---|---|---|
| Analog | Low | Basic | Manual | Hobbyists, educational use |
| Basic Digital | Medium | Easy | Semi-Automated | Home incubators, beginners |
| PID | Very High | Moderate | Highly Automated | Commercial hatcheries, labs |
| Hybrid | Medium-High | Easy to Moderate | Semi-Automated | Transitional setups, mid-scale farms |
| Wireless/Smart | High | Advanced (App-based) | Fully Automated | Large operations, remote monitoring |
Expert Tip: When upgrading from analog to digital or smart controllers, ensure compatibility with your incubator’s heating and ventilation systems. Calibrate sensors regularly using a trusted reference thermometer to maintain accuracy and maximize hatch success.
Industrial Applications of Egg Incubator Controllers
Egg incubator controllers are essential in commercial and industrial environments where precision, consistency, and automation are critical for successful hatching outcomes. These advanced systems ensure optimal temperature, humidity, and ventilation control, directly influencing hatch rates, chick quality, and operational efficiency. From large-scale poultry farms to specialized research labs, incubator controllers enable reliable and scalable reproduction processes across diverse biological and industrial applications.
Key Industrial Applications
Large-Scale Poultry Farming
In commercial hatcheries, where tens to hundreds of thousands of eggs are incubated simultaneously, manual monitoring is impractical and error-prone. Automated egg incubator controllers provide precise regulation of temperature (typically 99.5°F ± 0.3°F) and humidity (50–60% RH), ensuring uniform development across batches.
Modern controllers often feature wireless connectivity and cloud-based monitoring, allowing farm managers to receive real-time alerts and adjust settings remotely. This level of automation reduces labor costs, minimizes human error, and supports compliance with food safety and animal welfare standards.
Exotic Birds and Game Bird Hatcheries
Hatcheries specializing in parrots, quail, pheasants, and other non-commercial bird species rely on incubator controllers to meet species-specific requirements. These birds often have narrower thermal tolerance ranges and longer incubation periods, making precise environmental control essential for embryo viability.
Controllers with programmable profiles allow breeders to customize temperature and humidity curves for each species, improving hatch success rates and preserving genetic diversity. This is especially important in conservation programs and high-value aviculture markets where even minor deviations can lead to developmental abnormalities or mortality.
Reptile Breeding Operations
Reptile breeders use egg incubator controllers to maintain exact temperature and moisture levels required for successful hatching of snakes, lizards, and turtles. Many reptile species exhibit temperature-dependent sex determination (TSD), where incubation temperature directly influences the sex ratio of offspring.
PID (Proportional-Integral-Derivative) controllers are widely used in this sector due to their ability to minimize temperature fluctuations (±0.1°C). This precision allows breeders to strategically manipulate sex ratios and optimize hatch timing, which is crucial for commercial operations and species preservation efforts.
Research Laboratories
Scientific institutions conducting studies in avian embryology, genetics, disease modeling, and developmental biology require incubators with highly accurate and repeatable environmental control. Researchers use programmable controllers to simulate natural conditions or create controlled stress environments for experimental purposes.
Data logging capabilities allow for continuous monitoring and analysis of incubation parameters, supporting reproducibility and peer-reviewed research. Even small-scale lab incubators demand industrial-grade precision to ensure valid, publication-quality results.
Commercial Egg Production & Food Industries
Beyond live chick production, incubation technology supports the manufactured egg industry—such as powdered eggs, vaccines, and specialty proteins derived from embryonated eggs. In these applications, consistent incubation ensures uniform embryo development, which is critical for downstream processing and product quality.
Controllers integrated with IoT platforms enable traceability and batch tracking, helping facilities comply with HACCP, FDA, and EU food safety regulations. High hatch efficiency also reduces waste and improves yield in large-scale production lines.
Veterinary and Avian Specialized Clinics
Specialty veterinary clinics and avian hospitals use incubators to support assisted reproductive technologies, including artificial insemination and embryo transfer in birds. For endangered or infertile species, incubator controllers help sustain embryo development outside the parent’s body.
These clinical environments demand medical-grade reliability and sterility. Controllers with HEPA filtration integration, antimicrobial surfaces, and fail-safe alarms ensure optimal conditions for delicate procedures, increasing the chances of successful hatching and species recovery.
| Application Sector | Primary Controller Features | Key Benefits |
|---|---|---|
| Large-Scale Poultry Farming | Wireless monitoring, multi-stage programming, remote alerts | High hatch rates, reduced labor, scalability |
| Exotic & Game Bird Hatcheries | Species-specific profiles, humidity fine-tuning | Improved viability, genetic preservation |
| Reptile Breeding | PID control, temperature-dependent sex programming | Precise sex ratios, higher hatch success |
| Research Laboratories | Data logging, environmental replication, calibration accuracy | Scientific validity, experimental consistency |
| Food & Commercial Egg Industry | Batch tracking, compliance integration, IoT connectivity | Regulatory compliance, reduced waste, traceability |
| Veterinary & Avian Clinics | Medical-grade sensors, alarm systems, sterile design | Embryo survival, reproductive support |
Why Precision Control Matters
Important: In industrial settings, using substandard or non-calibrated controllers can lead to significant financial losses due to failed hatches, regulatory non-compliance, or compromised research data. Always select controllers with proven accuracy, third-party certifications, and technical support. Regular calibration and preventive maintenance are essential to sustain peak performance.
Product Specifications and Features of Egg Incubator Controllers
Egg incubator controllers are essential for achieving optimal hatching success by precisely regulating environmental conditions. Modern controllers offer advanced features that ensure stable temperature and humidity levels, automate critical processes, and provide real-time monitoring—making them indispensable for hobbyists, breeders, and commercial hatcheries alike.
Advanced Control Systems
Modern incubator controllers use intelligent algorithms to maintain precise environmental conditions crucial for embryo development.
- PID Controllers: Proportional-Integral-Derivative systems continuously adjust output to eliminate temperature swings, maintaining stability within ±0.1°C.
- Digital Thermostats: On/Off systems are cost-effective for basic setups but may cause slight fluctuations (±0.5°C).
- Multi-Zone Control: High-end models support independent control of temperature and humidity zones for large or modular incubators.
Key advantage: PID technology prevents thermal shock, improving hatch rates by up to 15% compared to basic thermostats.
Environmental Monitoring
Precise sensing and feedback mechanisms ensure accurate environmental regulation throughout the incubation cycle.
- High-Accuracy Sensors: Digital thermistors and capacitive hygrometers provide reliable readings with minimal drift over time.
- Remote Sensor Options: External probes allow monitoring inside the egg chamber without opening the incubator.
- Cross-Validation: Some controllers support dual sensors for redundancy and error detection.
Pro tip: Calibrate sensors monthly using NIST-traceable reference instruments for best results.
Technical Specifications
| Specification | Standard Range | Extended/Advanced Options | Application Notes |
|---|---|---|---|
| Temperature Range | 15°C – 40°C | 5°C – 50°C (with external heating/cooling) | Ideal for poultry, reptiles, and amphibians; extended range supports exotic species |
| Humidity Range | 40% – 70% RH | 20% – 90% RH (with dehumidifier/humidifier) | Adjust based on species: waterfowl need 75%+ during lockdown |
| Temperature Accuracy | ±0.5°C | ±0.1°C (PID-controlled) | Critical for sensitive species like parrots and raptors |
| Control Type | On/Off thermostat | PID, fuzzy logic, or adaptive control | PID reduces energy consumption and thermal stress |
| Sensor Type | Integrated thermistor/hygrometer | Remote digital sensors with shielded cabling | Remote sensors prevent heat interference from electronics |
Setup and Installation Guide
Installation Best Practices: Proper setup is critical for reliable performance. Follow these steps carefully to ensure optimal incubation conditions from day one.
-
Install the Temperature Sensor
Position the sensor in the center of the incubation chamber, away from direct contact with heating elements, walls, or water trays. Secure it with non-conductive tape to prevent movement. For best accuracy, use a protective sleeve to shield the sensor from moisture while allowing thermal conductivity.
-
Connect Heating and Cooling Elements
Wire heating devices (ceramic heaters, heat lamps, or pads) to the controller's output relay. For cooling, connect fans or Peltier modules to maintain temperature during warm ambient conditions. In forced-air incubators, ensure the fan runs continuously or cycles with temperature demands to promote even heat distribution.
-
Set Humidity Levels
Connect humidifiers (ultrasonic misters or wick systems) to dedicated humidity outputs. Use dehumidifiers or ventilation fans for high-humidity environments. Allow the system to stabilize for 24 hours before introducing eggs to verify consistent humidity control.
-
Power the Controller
Plug the controller into a surge-protected outlet. Verify all connected components receive power when activated. Check for proper grounding, especially in high-moisture environments, to prevent electrical hazards.
-
Set Temperature and Humidity
Program species-specific setpoints (e.g., 37.5°C and 55% RH for chicken eggs). Allow 12–24 hours for environmental stabilization before loading eggs. Many controllers feature preset profiles for common species to simplify setup.
-
Install an Alarm System
Configure high/low alarms for temperature and humidity with thresholds ±1°C and ±5% RH from setpoints. Connect audible and visual alarms, or enable smartphone notifications on smart controllers. Test alarm functionality before each hatch cycle.
Operating Features and Daily Use
Real-Time Monitoring & Control
- Digital displays show current and set values for temperature, humidity, and elapsed time.
- Touchscreen or button-based interfaces allow easy adjustments without opening the incubator.
- Smart controllers offer Wi-Fi or Bluetooth connectivity for remote monitoring via mobile apps.
- Voice-controlled models enable hands-free operation in busy hatchery environments.
Innovation highlight: Cloud-connected controllers send alerts and allow parameter changes from anywhere.
Alarm Response & Emergency Management
- Automatic alerts trigger when conditions exceed safe thresholds, preventing embryo loss.
- Some systems activate backup heating or cooling when primary systems fail.
- Power outage detection with battery backup (3–12 hours) maintains critical functions.
- Event logging records alarm history for troubleshooting and quality control.
Critical protocol: Respond to alarms within 15 minutes to avoid developmental damage.
-
Accessing Historical Data
Controllers with data logging store temperature and humidity trends over time. This information can be exported via USB or cloud services for analysis. Reviewing historical data helps identify patterns, optimize future cycles, and comply with breeding program documentation requirements.
Maintenance, Calibration, and Troubleshooting
Maintenance Schedule: Regular upkeep extends controller lifespan and ensures consistent performance. Create a monthly checklist to stay proactive.
-
Routine Maintenance
Clean the controller housing with a dry, lint-free cloth. Avoid moisture exposure to prevent short circuits. Keep ventilation openings unobstructed to prevent overheating. Inspect for dust accumulation monthly, especially in agricultural environments.
-
Calibration Checks
Compare controller readings against a calibrated thermometer and hygrometer placed inside the incubator. If discrepancies exceed ±0.3°C or ±3% RH, perform calibration per manufacturer instructions. Many digital controllers allow offset adjustments to correct sensor drift.
-
Firmware Updates
Check the manufacturer’s website quarterly for firmware updates that improve stability, add features, or fix bugs. Follow update procedures carefully—interrupting updates can brick the device. Smart controllers may support over-the-air (OTA) updates.
-
Inspecting Wiring and Connections
Regularly examine power cords, relay connections, and sensor cables for signs of wear, corrosion, or rodent damage. Loose connections can cause intermittent failures. Replace frayed wires immediately and use conduit in high-risk areas.
-
Testing Alarm Systems
Simulate alarm conditions monthly by temporarily adjusting thresholds. Verify that audible alarms sound, lights flash, and notifications are sent. Document test results for quality assurance purposes. Replace controllers that fail alarm tests.
Choosing the Right Controller for Your Needs
- Hobbyists: Basic digital thermostats with humidity control suffice for small-scale hatching.
- Breeders: PID-controlled units with data logging and alarms ensure consistency across multiple clutches.
- Commercial Hatcheries: Networked smart controllers with remote monitoring and compliance reporting are ideal for large operations.
- Research Facilities: High-precision controllers with audit trails and GLP compliance support scientific studies.
Final recommendation: Invest in a slightly higher-tier controller than currently needed—scalability ensures long-term value as your hatching operation grows.
Quality and Safety Considerations of Egg Incubator Controllers
Ensuring high quality and safety standards in egg incubator controllers is essential for maximizing hatch rates, protecting developing embryos, and safeguarding users. A well-designed controller not only maintains optimal environmental conditions but also prevents potential hazards such as fire, electrical shock, or equipment failure. This guide explores the key factors that contribute to the reliability, efficiency, and safety of incubator control systems.
Safety Warning: Always use incubators in dry, well-ventilated areas away from flammable materials. Regularly inspect all electrical components and never operate a controller with damaged wiring or signs of overheating.
Key Quality and Safety Features of Incubator Controllers
- Temperature Accuracy and Stability
Precise temperature control is critical during egg incubation, as even minor fluctuations (±0.5°C) can impair embryo development or reduce hatchability. High-quality controllers utilize advanced sensors such as NTC thermistors or digital temperature probes that offer superior accuracy and long-term stability.
Look for controllers with auto-calibration features and real-time temperature displays. Some models include alarm systems that alert users when temperatures fall outside the safe range (typically 37.5–37.8°C for chicken eggs), helping prevent catastrophic losses.
- Humidity Control
Optimal humidity levels (40–60% RH during incubation and 65–75% during hatching) are vital for proper embryo development and chick emergence. Controllers equipped with integrated hygrometers and dew point monitoring ensure consistent moisture levels inside the incubation chamber.
Advanced models offer programmable humidity settings and automatic water tray management via solenoid valves or misting systems. Users should verify sensor accuracy periodically using a calibrated reference hygrometer to avoid misleading readings caused by condensation or mineral buildup.
- Ventilation Management
Developing embryos require a continuous supply of fresh oxygen and effective removal of carbon dioxide. Poor ventilation can lead to suffocation, weak hatchlings, or bacterial growth due to stagnant air.
Modern incubator controllers often include timed fan cycles or CO₂ sensors to regulate airflow automatically. Units with variable-speed fans provide more precise control than simple on/off mechanisms, reducing temperature swings while maintaining air exchange. Ensure vents are unobstructed and clean them regularly to prevent dust accumulation.
- Material Quality and Durability
The physical construction of the controller must withstand prolonged exposure to heat and moisture. High-grade, fire-resistant plastics (such as ABS or polycarbonate) and sealed enclosures protect internal electronics from steam and accidental spills.
Avoid controllers made with brittle or thin materials that may crack over time. Look for IP-rated (Ingress Protection) housings—such as IP65—for dust and moisture resistance. Mounting brackets should be robust and allow for easy access during maintenance.
- Electrical Safety
Given that incubators operate continuously for 21+ days, electrical safety is paramount. Choose controllers with built-in surge protection, thermal fuses, and circuit breakers to guard against power spikes, short circuits, or overheating.
Ensure the unit is properly grounded and uses UL/CE-certified components. Use a grounded outlet and consider plugging the incubator into a GFCI (Ground Fault Circuit Interrupter) outlet, especially in humid environments like basements or barns. Avoid extension cords; if necessary, use heavy-duty, short-length cords rated for continuous duty.
- Proper Insulation and Seal Integrity
Effective insulation minimizes energy consumption and stabilizes internal conditions. Gaps or degraded door seals can cause heat loss, humidity fluctuations, and inconsistent performance.
Inspect rubber gaskets regularly for cracks, warping, or mold growth. Replace them if they no longer form an airtight seal. Controllers work best when paired with well-insulated incubator chambers made from materials like expanded polystyrene (EPS) or polyurethane foam, which provide excellent thermal resistance.
- Regular Maintenance and System Checks
Preventive maintenance extends the lifespan of both the controller and the incubator. Dust buildup on sensors and fans can impair performance, so schedule routine cleaning every few孵化 cycles.
Check all cables, connectors, and solder joints for signs of wear, corrosion, or overheating. Calibrate temperature and humidity sensors at least once per year using trusted reference instruments. Keep a log of maintenance activities and any anomalies observed during operation.
| Safety/Quality Factor | Recommended Specification | Risks of Neglect | Best Practices |
|---|---|---|---|
| Temperature Control | ±0.1°C accuracy with digital feedback | Embryo death, reduced hatch rate | Use calibrated sensors; enable alarms |
| Humidity Monitoring | Digital hygrometer with auto-correction | Dehydration or drowning of chicks | Regular calibration; clean water trays |
| Ventilation | Programmable fan cycles or CO₂ sensing | Poor oxygen exchange, weak hatchlings | Clean filters; avoid blocking vents |
| Material Build | Fire-resistant, IP65-rated enclosure | Fire hazard, water damage | Inspect casing; avoid moisture exposure |
| Electrical Protection | Fuse, surge protector, GFCI compatibility | Electrical shock, equipment failure | Use grounded outlets; check wiring |
| Insulation & Seals | Airtight door with durable gasket | Energy waste, unstable environment | Test seal integrity monthly |
Expert Tip: For critical breeding operations, consider using a dual-controller setup or a backup thermometer/hygrometer. This redundancy ensures early detection of controller failure and prevents total batch loss due to unnoticed malfunctions.
Additional Recommendations for Safe and Efficient Operation
- Always read and follow the manufacturer’s installation and operating instructions.
- Place the incubator on a stable, level surface away from direct sunlight and drafts.
- Label sensors clearly and avoid placing them near heat sources or water reservoirs.
- Keep a physical logbook or digital record of temperature, humidity, and maintenance.
- Train all users on emergency procedures, including how to safely unplug the unit.
- Replace aging controllers after 3–5 years of continuous use, even if they appear functional.
Investing in a high-quality, safety-certified incubator controller pays dividends in hatch success, operational reliability, and user peace of mind. By prioritizing precision, durability, and protective features, poultry breeders, farmers, and hobbyists can create a controlled, secure environment ideal for healthy embryonic development. When in doubt about a controller’s performance or safety, consult the manufacturer or a qualified technician before continuing use.
Frequently Asked Questions About Egg Incubator Controllers
An egg incubator controller acts as the central nervous system of the incubation environment, ensuring optimal conditions for embryo development. It continuously monitors temperature and humidity levels using high-precision sensors placed inside the incubation chamber.
The controller's internal processor compares the real-time sensor data to the user-defined set points. If deviations are detected, the system activates peripheral devices such as:
- Heating elements – to raise temperature when it falls below the desired range.
- Cooling mechanisms – like small fans or Peltier coolers, to reduce heat when necessary.
- Humidifiers or water trays – to increase moisture levels through evaporation.
- Ventilation systems – to regulate airflow and maintain proper gas exchange (oxygen in, CO₂ out).
Modern digital controllers often include intuitive user interfaces—such as LCD screens and button controls or even smartphone apps—that allow users to monitor conditions in real time, adjust settings, and receive alerts if parameters fall outside acceptable ranges.
Extremely important. Precision in temperature and humidity control is critical to successful hatching. Even minor fluctuations—such as a 0.5°C shift in temperature or a 5% change in humidity—can negatively impact embryonic development, leading to weak chicks, developmental abnormalities, or complete hatch failure.
Advanced controllers, especially those utilizing PID (Proportional-Integral-Derivative) algorithms, offer superior accuracy by predicting and correcting temperature changes before they occur, minimizing overshoot and oscillation. These systems maintain a much more stable environment compared to basic on/off controllers.
High-quality sensors and regular calibration further enhance reliability. For best results, users should choose controllers with ±0.1°C temperature accuracy and ±3% relative humidity precision, particularly when incubating sensitive species or large batches of eggs.
Yes, many modern digital controllers are versatile enough to support a wide variety of avian species—including chickens, ducks, quail, turkeys, parrots, and even reptiles like snakes and turtles—provided they offer sufficient programmability and environmental control.
Different species require distinct incubation profiles:
| Species | Temperature (°C) | Humidity (%) | Incubation Period (Days) |
|---|---|---|---|
| Chicken | 37.5 – 37.8 | 45–55 (early), 65–75 (hatch) | 21 |
| Duck | 37.2 – 37.5 | 55–65 (early), 80+ (hatch) | 28 |
| Quail | 37.5 – 37.8 | 45–55 (early), 65–75 (hatch) | 17–18 |
| Parrot | 37.0 – 37.5 | 50–65 | 18–28 |
To achieve optimal results, users must program the controller according to the specific needs of the species being incubated. Multi-stage programming, automatic humidity adjustment, and fan control features enhance adaptability across species.
Safety is paramount, as incubators operate continuously for days or weeks and involve electrical components near moisture. A failure could lead to fire hazards, electrical shorts, or total hatch loss.
Key safety features to look for include:
- Surge protection and fuses – Prevent damage from power spikes and overcurrent situations.
- Fire-resistant housing materials – Such as high-grade ABS or polycarbonate plastics that resist ignition.
- Ground fault protection – Especially important in humid environments.
- Overheat protection – Automatic shutoff if internal temperatures exceed safe limits.
- Moisture-resistant wiring and connectors – To prevent corrosion and short circuits.
In addition to built-in features, regular maintenance is crucial. Users should inspect wires, fans, heating elements, and sensors periodically for signs of wear, corrosion, or loose connections. Keeping the incubator clean and operating it on a stable, dry surface further reduces risks.
The primary differences lie in precision, functionality, and ease of use:
| Feature | Analog Controller | Digital Controller |
|---|---|---|
| Technology | Uses mechanical thermostats and basic rheostats. | Employs microprocessors and digital sensors for precise control. |
| Accuracy | Limited; prone to drift and wide temperature swings. | High; often within ±0.1°C with PID regulation. |
| User Interface | Dials and gauges; no data logging. | LCD/LED displays, menus, and real-time graphs. |
| Programmability | Fixed settings; no customization. | Multiple profiles, stage-based programming, alarms. |
| Maintenance | Less complex but harder to calibrate. | Self-diagnostics, easier troubleshooting. |
Digital controllers represent a significant advancement over analog models, offering greater accuracy, enhanced user feedback, and advanced features like automatic turning control, data logging, and remote monitoring via Wi-Fi. While analog units may still be found in older or budget incubators, digital systems are now the standard for serious hatchers and commercial operations due to their reliability and performance.








浙公网安备
33010002000092号
浙B2-20120091-4
Comments
No comments yet. Why don't you start the discussion?