RF-175-welding cylinders is our company's high quality product,we also can supply production according to customer's demands. 1. Thermal-insulating mode: high-vacuum multi-layer thermal insulation 2. Specification: 175L, 210L, 175HL,210HL Working pressure: ≤2.3MPa 3. edium: LOX, LIN, LAr,LCO2 Low-Temperature Insulation Cylinders applies to scientific research, chemical, electronic industries.