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About product and suppliers:
        Alibaba.com offers 1,273 720p hd quad products. About 23% of these are car video. 

A wide variety of 720p hd quad options are available to you, such as paid samples, free samples. 

There are 1,281 720p hd quad suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Hong Kong, and Taiwan, which supply 99%, 1%, and 1% of 720p hd quad respectively. 

20p hd quad products are most popular in North America, Mid East, and South America. 

You can ensure product safety by selecting from certified suppliers, including 163 with ISO9001, 129 with Other, and 14 with ISO14001 certification.