Hangzhou Foreign Economic Relations and Trade Service Co., Ltd., founded in 2000, is one of the largest integrated international trading group. We focus on fine and specialty chemicals business with 20 years industry experience. Relying on the famous brand of TRIGGER Chemicals, we are constantly committed to developing and marketing high performance and cost effectively chemicals to our valued customers in the world. Now, we are mainly engaged in Epoxy Curing Agent, Polymer Additives, Paper Chem...