UNISTARS has specialized in manufacturing Methyl Tin Mercaptide since 2001. With over 20 years of development, it has become a top player in China’s industry. The company focuses on R&D, production and sales of PVC additives, with an annual capacity of 8,000 to 10,000 tons. We keep investing in technology and own a professional technical team. Holding long-term ISO9001 certification, we strictly follow relevant norms to provide high-quality, cost-effective PVC stabilizers.