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Qingdao Topwell Chemical Materials CO., LTD is a comprehensive fine chemical enterprise that dedicates to R&D, Manufacturing, and marketing. Company is located in Qingdao City, Shandong, Products range include chemical intermediate, functional dyestuffs(sensitive and near infrared(NIR) dyes),thermochromic & phothochromic pigment for plastics and security application, plastic & rubber additives, etc. Basis client confidentiality, we also supply custom processing synthesis services for various fine chemicals and specialty chemicals.At present, we have lots of customers both at home and abroad, including USA, EU, Japan, South Korea,South America, South-east Asia, Mid-east and other countries or regions. We will always take" providing excellent products and satisfactory service "as our duty.