It has a much better brand of nylon wheel norms:
In order to let people try to avoid being, castor manufacturers, will some characteristics of the nylon wheel.In general, the color of the finished product is light yellow or milk white nylon round, as a result of nylon is high polymer material, so has high mechanical strength, can achieve the strength of the metal materials.
There is a very simple identification method, is to use the hammer, testing its hardness, if you buy wheel hard enough, so is the nylon wheel, on the contrary, if very soft, so is the plastic wheel.
. In fact, nylon wheel brand identification is simple, the anti-counterfeiting mark can see.