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About product and suppliers:
        Alibaba.com offers 1,781 waterproof screw cap products. About 8% of these are other plastic products, 7% are connectors, and 5% are lids, bottle caps, closures. 

A wide variety of waterproof screw cap options are available to you, such as screw cap, bottle stopper, and disc cap. You can also choose from plastic, silicone, and metal. As well as from bottles, jars, and cups. And whether waterproof screw cap is non spill, non-refillable, or child-proof. 

There are 1,786 waterproof screw cap suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Taiwan, and India, which supply 99%, 1%, and 1% of waterproof screw cap respectively. 

Waterproof screw cap products are most popular in North America, Western Europe, and Domestic Market. 

You can ensure product safety by selecting from certified suppliers, including 396 with ISO9001, 213 with Other, and 94 with ISO14001 certification.