sales promotion girls should be able to market a product and explain its superiority. for example on car products. spg could explain that the car was assembled using mig welding techniques are very powerful. Until no visible defects, iron builders feels light and soft, invisible even nickel alloy, that's greatness oxy laser welding machine in a perfect result. MIG welding is useful because can use to weld many different types of metals: carbon steel, stainless steel, aluminum, magnesium, copper, nickel, silicon bronze and other alloys.