amino acid powder, amino acid liquid（Ca,Mg,Zn,Cu,Mn,Mo,B etc）and personal care products of silk amino acid,which is widely used in cosmatics ,shampoo, hair conditioner and hands cream United States, Europe, Southeast Asia and South America, we win valued reputaWe have our own R&D team and standard test laboratory,which are equipped with advanced detection instruments like high performance liquid chromatography, atomic absorption spectrophotometer, as well as Kjeldahl nitrogen analyzer which can analyze amino acid content, total nitrogen content, organic nitrogen content, organic matter and various metal element content