Qingdao Weideer Chemicals Co.,Ltd mainly trading for inorganic chemicals,organic chemicals,pigments/dyes.we have our own factories,professinall engineers,technological machines,and experienceful workers,could supply you good quality products,enough quantity and superier services at all times.Tianjin Tiangang Chemical welcome to your kindly inquiry,and looking forward to establish business relationship in the near future.inquiry by: yange at weideerchem. net