WEIFANG YI HUA CHEMICAL CO., LTD. was established in 2006 by Qingdao Jiaonan Aotong Fine Chemical Co., Ltd. and Sun Ace Singapore Investment Pte. Ltd. The joint venture company is engaged in the production and sales of Thioglycolic Acid (TGA), 2-Ethylhexyl Thioglycolate (2-EHTG) and Methyl Tin Mercaptide (MTM). Weifang Yi Hua is led by a team of passionate and innovative professionals contributing their talents in every aspect from production, technical, sales to customer service. We are committed to ensuring continuout .......More