Quzhou Jianhua Dongxu Additives Co., Ltd is a subsidiary of Zhejiang Jianhua Group, located in high-tech park of Quzhou in Zhejiang Province with factory built in Jianhua Chemical Park. It starts in July 2007, covering 20000 square meters the total asset amounts to 82 millions. The company named Hangzhou Dongxu Additives Co., Ltd before moving to Quzhou in July 2008. Our company devotes to R & D sales of methyltin heat stabilizers, which mainly used in PVC industry. The products classified into four series with more than 10 types, including methyltin mercaptide heat stabilizer, methyltin of organic acid heat stabilizer, methyltin chloride methyltin oxide. Our products are widely used in PVC extrusion, calandering, blowing and injection mould. The good early color stability, excellent transparency and superior heat stability enable the products to be the critical additives of PVC film, sheet, panel, granule, profile, pipe and pipe fitting. The sales network reaches Yangtze river Delta, Pearl river Delta, Southwest, Northeast, southeast etc. in china and reaches American, southeast Asian Europe etc. abroad. Our products with excellent performance and stability contribute a lot to domestic PVC industry. Our company insists on innovation of technology, products management. The complete effective manufacture system, strict supervision manufacture, advanced process with precision instruments apparatus, superior inspection equipment perfect test methods provide the conditions for producing excellent stable products. After nearly ten years development, the capacity reaches 5000 ton per year. It will reach 10000 ton capacity per year after the completion of the second stage expansion whose preliminary work is proceeding.