Diaphragm Pumps, Rotary Airlock Valve, Catalyst Extruder manufacturer / supplier in China, offering 1.5 Inch 48lpm Aluminum Alloy Electric Diaphragm Pumps, 1.5 Inch 4 Bar Stainless Steel Electric Driven Double Diaphragm Pumps, 1.5 Inch 48L PP Material Electric Double Diaphragm Pumps for Chemical and so on.