It won't hurt welding glue, and it can stick to automobile parts. What can solder paste stick to: shoes, hats, food, drinks, instant noodles, beer, medicines and other packaging sealed boxes, children's diapers, sick mattresses, incontinence products for the elderly and so on. Hot melt adhesive is a kind of plastic adhesive. In a certain temperature range, its physical state changes with the change of temperature, but its chemical characteristics remain unchanged. Non-toxic and tasteless, belonging to environmental protection chemical products. This glue is strong enough to replace electric welding. It can effectively stick metals and other objects, such as broken saws and jade articles repaired with it. Very strong, comparable to welding. The two bonding methods are environmentally friendly, tasteless, long in storage time, easy to construct, and can be reused after one or two years.