... and light pump 3.low pressure pump 4.centrifugal impeller water pump manufacturera . Shijiazhuang Longwei Pump Co., Ltd. is specialized in ... engineers and technicians, and an area of 62,000 square meters with annual production capacity of 6,100 tons. We are ... as desulfurization pumps, slurry pumps, dredging pumps, chemical pump and water pump. b. Application :This series pump is small and light ...