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About product and suppliers:
        Alibaba.com offers 314,214 ph products. About 8% of these are ph meters, 1% are water treatment, and 1% are coconut oil. A wide variety of ph options are available to you, such as free samples, paid samples. There are 291,449 ph suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Philippines, and India, which supply 89%, 7%, and 1% of ph respectively. Ph products are most popular in North America, Southeast Asia, and Southern Europe. You can ensure product safety by selecting from certified suppliers, including 57,963 with ISO9001, 42,633 with Other, and 6,469 with ISO13485 certification.
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