1、 The quality of supermarket shelves. The shelves with good quality are made of steel, with excellent technology, smooth surface spraying plastic powder, reasonable design and service life of 5-8 years; Inferior shelves are generally made of strip steel, Shopping Trolley manufacturerwhich is rough, painted on the surface, and dilapidated in 2-3 years. Generally, supermarkets need to replace the shelves in about 5 years, because the steel of supermarket shelves has been "tired" after long-term use. In the process of frequent disassembly, the shelf structure is no longer as firm as the new one. As a place with dense flow of people, safety and security are important, so they need to be replaced. The new shelf is important.Shopping Trolley manufacturer