... 2.auto-off valves efficient and reliable 3.Suitability 4.Fit all kinds of combustible gas Over view:New patent products ... , the leading price. Fit all kinds of combustible gas, fit 4 hours, 6 minutes, 1 inch different ... : Three adjustable bracket and torque, so that the robot can fit 4 hours, 6 minutes of different types of old and ...