Nigrosine

銆??Zhengzhou High-Tech Chemical Import and Export Company Limited (abr. Zhengzhou High-Tech Chemical Imp & Exp Co., Ltd or Hi-TeChem) is a legal registration enterprise engaging in dealing chemicals for import and export as its main and owns its industrial factory and undertakes as well as project of joint venture, co-production, tech-exchanging, consultation and processing as per supplied materials and samples, assembling supplied parts, compensation trade etc.

銆??Hi-TeChem mainly focuses o...