Shanghai Rich machine manufacturing co, ltd is a sino-foreign joint venture specialized in research , production and sale of screw air compressor , the compant boasts powerful technology division , stricitly -controlled production division , agile marketing division and expenditious , considerate after-sale service , making Rich highly adative to the market , having passed ISO9001 quality system certification , the company is equiped with perfect and high quality management systems in everys step such as research , design , purchase , processing , production , assembly , sales ,and after-sale...