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About product and suppliers:
        Alibaba.com offers 169 28mm treatment pump products. About 89% of these are lids, bottle caps, closures. 

A wide variety of 28mm treatment pump options are available to you, such as plastic, metal, and aluminium-plastic. You can also choose from pp, abs. As well as from free samples. 

There are 169 28mm treatment pump suppliers, mainly located in Asia. The top supplying country is China (Mainland), which supply 100% of 28mm treatment pump respectively. 

8mm treatment pump products are most popular in North America, Domestic Market, and Western Europe. 

You can ensure product safety by selecting from certified suppliers, including 32 with ISO9001, 14 with Other, and 5 with ISO14001 certification.