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Main characteristics and purposes of products:YQY-220 series of portable hydrogen-oxygen welding and cutting machine the ideal product as the replacement of oxygen-acetylene welding and cutting. It has advantages including: high-efficiency, energy saving, no pollution, safety and reliability, wide application etc. The basic working principles are as follows: use water as raw material, electrolyze water to produce hydrogen and oxygen which are lighted to acquire high temperature flame and realize the functions of welding and cutting.-------------------------------------------------------Portable hydrogen-oxygen welding and cutting machine compared with other types at home and abroad has the following characteristics: 1.Wide applicable range: applicable for the power supply of more than 220V.2.Wide use range: the maximum thickness of cutting steel plate can reach 50MM (e.g. YQY-220/1000type). The cutting edge is smooth; the welding seam for welding steel plate is level.3.Convenient opera