Yalong is a professional manufacturer of high-pressure reciprocating pumps with 20 years experience of designing and producing. Our main products are 3W Triplex plunger / 5W Quintuplex plunger series reciprocating high-pressure plunger pump; 3Nb / 5nb piston pump; 3gp, 5gp series high-pressure steam boiler feed pump and high-pressure boiler feed pump; 3rc / 5RC series liquid CO2 injection and transfer pump; 3cq / 5cq series CO2 supercritical extraction pump; 3W / 5W series high-