Luoyang Zhengmu Bio-Tech Co.,Ltd. Located in Liuzhuang Village,Houshi Town in Yanshi City, Henan Province, is professional Veterinary API manufacturer in central China region. Our company has passed the Veterinary Drug GMP certification.Our major products of sulfonamides series include: :Sulfadiazine Sodium, Sulfadiazine, Sulfaguanidine, Sulfamethoxydiazine sodium, Sulfamethoxazole sodium, Sulfadimidine Sodium, Sulfadimidine, etc. Quinolone series products include:Norfloxacin hydrochloride, ...