Chengdu Okay Pharm focuses on the purification ,synthesis,in-depth development and application of natural vitamin P active ingredients such as quercetin, rutin, diosmin，neo-hesperidin, dihydrochalcoe, hesperidin and other natural vitamin P active ingredient. Products are widely used in health products, food additives, Established a sound quality management system, organized production and implementation management in accordance with GMP drug management practice requirements and FSSC food managem