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SODIUM SULPHIDE (50%MIN & 60%MIN)
SODIUM HYDROSULPHIDE 70%MIN
Qingdao Star Joint industry and trade co., LTD. is one leading manufacturer specializes in production and sales of oil drilling chemicals. Its products covers a range of drilling fluids for Oil and Gas Wells....
17F, Develop Building, Zhongshan Road, Shinan District, QINGDAO City, Shandong Province, CHINA
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