Our products apply Taiwan's manufacturing technology.The core parts crankcase and air chamber are one-time processing completion in CNC Machining Center to ensure the accuracy.The oil seal seat in the air chamber is inlaid with oil bearing. When heated the oil bearing will exude grease so as to lubricate the plunger.The plunger is CERAMICand its length is 129mm. We enlarge the ball cock which is copper with nickel plating on the surface. The valve assy is thickened 304 stainless steel.The valve part is ceramic, and valve seat is 304 stainless steel with heat treatment, which increases it hardness.The net weight for the whole machine is 12.3 kilograms, which is about 2 kilograms heavier than the similar products.The firm and solid material ensures the product's stability.