Active Pharmaceutical Ingredients (API) are active chemicals used in the manufacturing of drugs. Another term for Active Pharmaceutical Ingredient is Bulk Drug Substance, although API is more internationally recognised. Dawnrays is a major and professional Pharmaceutical Ingredients manufacturer from China. Dawnrays' hottest API products include Ceftriaxone Sodium Sterile, Cefotaxime Sodium Sterile, Cefoperazone Sodium Sterile, Tazobactam Sodium Sterile, Cefepime Hydrochloride,  Sulbactam Sodium Sterile and so on.