Hangzhou Tidesource Chemical Co., Ltd. is a specialized manufacturing enterprise of optical brighteners, flame retardants and relative chemicals. Over years' hard working, Tidesource has experienced fast development and obtained big market share. Now, our products are highly welcomed and appraised by our customers. Located in Hangzhou Binjiang Industrial Park between Qianjiang Third Bridge and Qianjiang Fourth Bridge, our head office enjoys good location and advantages on information, ...