gear oil pump: kcb(2cy) gear oil pump 2cy gear lubricative pump wcb and s gear oil pump clb series pitch pump yhcb arc gear oil pump twin screw pump: 2w series twin screw pump 2h series double-absorb twin screw pump 2gm series single-absorb twin screw pump three screw pump: sn series three screw pump 3g series three screw pump vacuum pump: 2x rotary vane vacuum pump xz/2xz direct drive rotary vane vacuum pump sk/2sk water ring vacuum pump sk-p/2sk-p water ring vacuum pump with air jet contact: mr.soo job title: export manager e-mail : xxg@huang-gong.com website: http://www.huang-gong.com