1. How can we get sample to test quality before placing larger order? Very glad to tell you that Our Sample department can provide free sample for our customers to test quality. Usually, we will choose to ship samples by DHL, FEDEX, UPS etc.Pls kindly tell us your company name, delivery address, phone number and contact person for safe sample delivery. 2. Can we do printing or label printing on the bottles ? Yes, we can. we can offer label printing, shrink wrap, box packing, display cardboard box. About printing Color: Color can be made according to PANTONE code if needed. 3. Can you produce bottles according to our design? Yes, We can open custom mode according to your own design. 4. What is the normal lead time? For stock bottle, we will send goods to you within 3-5 days after receiving your payment For surface handing service, the delivery time is 10-15 work days after receiving your payment. 5. What is your shipping terms? **For small trial order,FEDEX, DHL, UPS, TNT etc can be provided. **For larger order,we can arrange shipment by sea,by air according to your requirement. 6. How do you control the quality? **We do leak test for 3 times before packing. **The ISO 9000 Qualified certification and ISO 9001:2000 international standard. **SGS test and TUV certificate, ISO8317 **Our Chemical bottles are disinfected in EO Sterilization. 7. If any defective bottle, how can you settle it for us? We have 1:1 replacement for the defective bottle.