Protocatechuic Aldehyde

Established in 1992, Xuzhou Dayang Chemical Co., Ltd. is a large-scale dyestuff group integrating R&D and mainly engaged in producing high-grade vat dyes and organic pigments. Our company has two synthesis factories and one processing factory for commercializing dyes and one Import&Export company of xuzhou dayang trade co.,ltd. Our company has complete quality control and quality testing equipment. In accordance with "ETAD" standard,our products are mainly exported to the US, Europe, south east ... View more >>