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YQY-220 series of movable oxyhydrogen welders are ideal products to replace oxygen-acetylene welders. They have advantages of effective, energy-saving, non-polluting, safe, vast capability, etc. Basic working principle: take water as the material, electrolyze water to have hydrogen and oxygen, and then emblaze hydrogen and oxygen to gain flame in high temperature, to start welding and cutting. Oxyhydrogen welders can weld black metals, color metal boards, tube materials and other melting materials.-------------------------------------------------------Movableoxyhydrogen welding and cutting machine compared with otherwelders has the following characteristics: 1.Notable economic benefit: low cost (if compared to traditional acetylene, the cost is decreased by over 50%). This machine only need to add electrolyte (10% of potassium hydroxide) for the first time to start the machine, and for later common uses, you only need to add ordinary tap water (distilled water or purified water will be