L0T晋焊 4.0焊条整天焊 ☑ 50米焊线正常焊接 4.0焊条专用 推力补偿 2D7400 PLT普得 PT羽 INCREASE THE WAVE STRUCTURE DESIGN TO MAKE THE HEAT DISSIPATION AREA LARGERAND INCREASE THE HEAT DISSIPATION EFFECT.ACHIEVE THERMAL ISOLATION AND ELECTRICAL ISOLATION TO MAKE THE WELDING MACHINE SAFE AND RELIABLE 深圳·首耐尔