Shanghai Hongbao Medical Instrument Co., Ltd. is a professional enterprise of Water Processing Systems, WFI making devices and Freeze Dryers, with more than 30 years of marketing experience and professional technology. Our company has passed ISO9001:2000 quality system certification and has been certified to manufacture pressure vessels for special kinds of equipment (TS2231021-2009). We have 7 patents: 1. Internal-heating-and-circulation multi-effect water distillers: 95243492x 2. Double tube-plate U type heat-exchangers: 98225059.2 3. Oil-heating multi-effect water distillers: 02266514.5 4. Bidirectional centrifugal separators: ZL2006 20039558.1 5. Electric-heating double spiral centrifugal separation pure steam generators: