With a history of more than 90 years, we, Qingdao Haiwan Specialty Chemicals Co., Ltd. is one of the leading manufacturers in China dyestuff and chemical industry. We received the honor as Qingdao high-tech company, Qingdao clean production company, Designated enterprise for dyes of PLA officer uniform etc. As a technology intensive company in producing dyestuff and specialty chemicals, we had participated in making 2 national standards and 7 industry standards. Our main products include disperse dye, neutral dye, neuter dyes , nigrosine, basic dy...