1. very suitable for various oil production 2. with CE, ISO and CCS certificates 3. high quality and competitive price Xinglong twin screw pump are designed according to GB/T11035-1989, SY/t6534-2002 and AIP676. They are proved to be ideal solution for various medium without solid, or with solid size <0.2mm, especially for oil production, such as fuel oil, diesel, vegetable oil, bitumen, etc. ...