The company, since established in 1984, has successfully developed Magnesium Sulphate. At the same time, We developed some high-tech new materials, such as Ortho-diallyl Bisphenol A, Bisphenol A Bisallyl Ether, Bismaleimide and 2-Allylphenol etc. "LAIYU" brand gains the famous Mark in Shandong province. The company is a leading enterprise in china magnesium sulphate trade. We passed successfully National safety standardization, ISO9001 Certificate, REACH official registration.