Shanghai risheng Biology Technology Co., Ltd. is a professional engaged in medicinal plant extracts and natural products isolation and purification of high-tech enterprises, import-export. Technology-oriented, quality first , with HPLC, TLC, GC, UV detection instruments, such as analysis of the production process to make omni-directional tracking control, and through the National Metrology certification, the products active ingredient, solvent residues, pesticide residues, heavy metals and ...