chongqing bull animal pharmaceutical co., ltd is located in rongchang, which is the china animal husbandry technology city, also the largest production base of veterinary medicines. we are the special supplier in manufacturing the veterinary medicine in different specification. our main products such as multivitamin injection, ivermectin injection, vitamin ad3e injection, oxytetracycline injection, nitroxinil injection, procaine penicillin injection, amoxi 详细介绍