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Zhenjiang Holda Materials Co.,Ltd was established in China in 2019. We are specialized in the production and export of Polyferric sulfate and heptahydrate ferrous sulphate with good quality and pretty competitive price. The two products are mainly used for industrial waste disposal. At the same time,we also sells WPC and SPC building decoration materials. Besides, we have many other series like micronized series according to customers¡¯request. All of them have got ISO9001:2008 and SGS certificate....
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