First, in the selection of welding machine products, to the formal production enterprises or shopping malls to buy, and to buy market share of the brand brandname. Do not covet cheap to small shops to buy, where the quality of the welding machine can not be guaranteed.
Second, when purchasing, check whether the nameplate on the product name, production address, specification model, welding current adjustment range, load duration and input voltage current and other contents, then according to the work needs to determine their own purchase of welding machine.
Third, the purchase can request the dealer to provide product quality inspection report or certificate. Because the welding machine product is the national compulsory certification products, so buy must confirm whether the product through "3C" certification. You can also search the Internet.