... the main products of YONJOU PUMPS.We have different type pumps:1.FB AFB: Volute Steel less chemical pump2 ... pumpApplication:FB series is widely used in chemical, oil, metallurgy, light industry, synthetic fiber, pharmaceutical, environment protection, wastewater treatment, oil ... adoption leaving the heart the pump relevantly, having with IH type leaving the heart pumping basicly same alike the number ...