... competitive price 3. OEM High quality and cheaper 2 cylinders CNG gas injector rail Chengdu Khons Trading Co., Ltd ... casting and forging parts, assembly service. 2.Various Machining Materialsaluminum, copper, brass, stainless steel, alloy steel , bronze, or customer specified ... and requirements, such as CNG injector with 3 cylinders, with 4 cylinders or other different technical data.Please just feel ...