... Deep refinery, little aromatic and pectin2. High flash point and high viscosity index,vacuum degree will not be ... variety of mechanical vacuum pumps domestically and abroadHFV-M100 is suitable for sliding vane rotary vacuum pump and roots pump with ... 30Liter ,esp. in color tube and illustration industryUsed in refrigeration, electro-vacuum, distillation, cryodesiccation,biology, chemical industry ...