How to buy supermarket shopping cart? 

4. The temperature of the supermarket is relatively appropriate, so when choosing casters, there are relatively few requirements for temperature. Shopping Trolley manufacturerowever, caster materials suitable for different temperatures should also be selected in different places, because Yan Qian and high temperature have a great impact on casters. If you are in the north, you should choose polyurethane castors. Experiments show that polyurethane can rotate flexibly even at a low temperature of minus 45 degrees; 

5. As a caster of supermarket Shopping Trolley manufacturer cart, its bearing weight must also be calculated well. If customers buy relatively heavy goods, such as rice and casters, it will affect customers' shopping desire. To calculate the bearing weight, we must know the dead weight, Zui heavy load, single wheel and quantity of the transport trolley. This formula can be applied: T = e + Z / m * n; T = single wheel or required bearing weight; E = self weight of transport trolley; Z = Zui heavy load; M = number of all single wheels and casters; N = safety factor