• Sourcing Solutions
  • Services & Membership
  • Help & Community
About product and suppliers:
        Alibaba.com offers 880,164 quad products. About 5% of these are integrated circuits, 2% are car video, and 2% are food bags. 

A wide variety of quad options are available to you, such as free samples, paid samples. 

There are 878,353 quad suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Hong Kong, and Taiwan, which supply 99%, 1%, and 1% of quad respectively. 

Quad products are most popular in Western Europe, North America, and South America. 

You can ensure product safety by selecting from certified suppliers, including 135,769 with ISO9001, 93,773 with Other, and 19,135 with ISO14001 certification.