Founded in 1995, China Dongda Power Industry Co., Ltd. is one of the few acetylene cylinder manufacturer and distributor in China that has patents on the generator, motor, power supply, engine, alternator, diesel and gearmotor design, supply and sale. Our custom acetylene cylinders has obtained the certifications of ISO9001-2000, GS/TUV, CE, VL, EPA, QHS, SON, CAP and SRS and we have won EPA 2005 Motor Year Certification. Our 30 QC staff carefully performs inspections at every stage of production, from the time we receive raw materials to packaging. Noise, power, and stability are tested to ensure that our engines can endure 580 hours of constant use. We also can design and deliver OEM/ODM samples in one month.

The product made in our company is welded by using fine low-alloy steel sheet and charged with the fillings of integral porous calcium silicate with its unique technique and strict quality control. It has the features of high porosity and large capacity. The dissolved acetylene gas cylinder produced by our company is reliable in quality, economic, safe and has obtained favourable comments from users. We can supply all kinds of "Z. P(HRF)" brand acetylene cylinders with nominal water capacity ranging from 7L to 40L. The products completely fit GB11638 standard. Meanwhile, we can also supply various kinds of welded steel cylinders and gas cylinders for liquid chlorine, liquid ammonia and LPG.

Acetylene cylinders are filled with a porous-mass packing material containing very small pores or cellular spaces so that any volume of gas therein is correspondingly small. This limits the decomposition of energy available and restricts communication between spaces. In addition, the mass is saturated with acetone. Acetone is a flammable liquid in which acetylene is very soluble. The acetylene gas is compressed in the acetone in a similar manner carbon dioxide in water produces carbonated water. When the pressure in the cylinder is reduced, by opening the valve, the gas escapes from the solution and the cylinder in a gaseous state. For this reason acetylene cylinders must be kept upright to ensure that when the valve is opened, only the gas escapes, not the solution.