... Welding gun 焊枪,喷灯 Welding gutter 焊管拉模 Welding handle 焊条夹,电极夹钳 ...
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This invention changes its 200 years history of limitation to roof gutter and drainpipe, due to its easy bending, cutting and welding property.
改变200年以来利用锌金属易于弯折、剪焊等加工特性而限于作为制造屋面天沟及排水管之用。
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