According to mutual comparison of possible future energy cost saving potential of the sea and the investment costs can be calculated investment - utilization ratio and return on capital employed (payback period). BAUER high pressure. Bicycle pump is the simplest volumetric compressor. Air is pumped cylinder, compressed by movement of the piston. Piston air compressor run the same principle, BAUER high pressure pneumatic machinery _ _ Xingchang BAUER high pressure compressor provided by Qingdao Xingchang Pneumatic Machinery Co., BAUER high pressure pneumatic machinery _ _ Xingchang BAUER high pressure compressor Pneumatic Machinery Co., Ltd. Qingdao Xingchang (www.xckyj.com) this year introduced a new upgrade, the above picture is for reference only, please call this page or Tel picture on to obtain the latest information, contact: Cui Junbo.