欧美av色香蕉一区二区小说,mm131午夜美女视频,偷拍视频欧美一区二区三区,欧美最另类脚交极品,婷婷在线免费视频尤物视频,妈妈的朋友在线观看中文字幕,在线 字幕 人妻 中文,亚洲av极品精品在线观看,午夜偷拍自啪啪福利视频

Founded in 1996, Huangshan RSP Manufacturing Co., Ltd. is a national high-tech enterprise specialized in R&D, manufacturing, sales and service of screw pumps with annual sales revenue of 105 million RMB and over 210 employees in 2012. It has also created the professional screw pump brand as "RSP".

RSP Co. is confirmed to attend the 13th China International Petroleum & Petrochemical Technology and Equipment Exhibition (cippe2013) to exhibit HAS series three-screw pumps on booth E3655, according to the organizing committee of cippe.

HAS series three-screw pump is a self-developed high performance three-screw pump, which could meet the most condition application requirements and replace the position of imports well. It has advantages as below: using twin-screw sleeve to make axial low pressure balance, screw keep in shape well under tension situation of active screw and driven screw in the operation，excellent rotary work by reducing friction on driven screw, high end, delicate appearance, precision parts, long life time, reliable operation, no spilling and green.