Consumers as non-professionals, how to protect their ow […]
Consumers as non-professionals, how to protect their own interests to ensure that they do not buy bad screws, screw manufacturers share some tips for selecting screws, I hope to help you choose to buy screws.
1. The screw manufacturer tells you that the surface of the screw is smooth and smooth, smooth and regular, and the bad edges are not polished, and there are burrs. If this is the case, try to buy smooth screws.
2, good quality screws have a long service life, you can ask the manufacturer how much the service life has to decide whether to buy;
3, screw manufacturers share good screws can fasten items, machines, and can closely cooperate with other things.