DEAR SIR: Jiangsu Yoke Chemical Co., Ltd, the biggest polyurethane additives & Blowing agent for rubber and plastic manufacturer inChina, was found in 1973, which devotes itself to the Research, Development , Production and Application of polyurethane catalyst (5000mt), silicone surfactant (5000mt), phosphate flame Photoretardant(20000mt), blowing agent for rubber and plastic (12000mt). Yoke, as one of the leader in the field , headquarters in Yixing and currently has 3 subsidiary companies in Xiangshui, Shanghai and Netherlands together with one R&D Center in Yixing.Yoke's global ambitions make itself on the technical frontal of polyurethane additive in the world.Photo Yoke has the most advanced testing equipments and techniques. Associated with the famous universities and technical academies, Yoke continuous to develop new productionsand bring much energy to the Chinese polyurethane additive market. Clients are benefit all the time from the value-added services of Yoke and its constantly-generated applied directions.