... 40L etc with competitive price and best quality. Dissolved Acetylene Cylinder We are a professional comprehensive enterprise integrating manufacturing ... main manufaturer in China to export seamless steel gas cylinders,acetylene cylinders,CNG cylinders for vehicle,high purity gas,valves and many ... customers over the world. We have diffrent sizes for acetylene cylinders,such as 2L,6L,12L,30L,40L and so ...