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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, ◆Our Product Products range include chemical intermediate, functional dyestuffs(sensitive and near infrared(NIR) dyes),thermochromic &photochromic pigment ,Basis client confidentiality, we also supply custom processing synthesis services for various fine chemicals and specialty chemicals. ◆Product Application for plastics and security applicat... [Details] |