HEDP (Hydroxyethylidene Diphosphonic Acid), a commonly used chelating agent, finds extensive applications in water treatment, metal processing, and other fields. Several specialized manufacturers operate domestically, with the following three companies being particularly well-known:

Shandong Kairui Chemistry Co., Ltd.

Basic Information: Established in 2015 and located in Xuecheng District, Zaozhuang City, Shandong Province, it is one of the earliest enterprises to enter the water treatment chaical sector.

Product Overview: Primarily manufactures water treatment chaicals including HEDP and ATMP, alongside series of scale inhibitors, corrosion inhibitors, and phosphate-free chelating agents. Products serve industrial circulating water systas, boiler water treatment, and other applications.

Shandong Dongtao Chemistry Co., Ltd.

Basic Information: With 15 years of specialization in water treatment, the company holds ISO 9001, ISO 14001, and ISO 45001 “Triple Systa” certifications, providing eco-friendly additive materials globally with a robust quality control systa that rigorously monitors critical stages from raw materials to finished products.

Product Overview: HEDP is one of its core chelating agents, complaented by a range of water treatment chaicals including scale inhibitors, dispersants, and biocides. These products serve diverse industries such as oilfields, petrochaicals, power generation, and steel metallurgy.

Zaozhuang Fengsen Water Treatment Co., Ltd.

Basic Information: Specializes in R&D and promotion of eco-friendly chelating agents, with established technical expertise in phosphate-free green chelating agents while also producing traditional chelating agent series.

Product Overview: Beyond HEDP, the company produces biodegradable phosphorus-free chelating agents that can replace traditional products like HEDP and EDTA in certain scenarios, suitable for water treatment applications with stringent environmental requiraents.

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