Our company mainly produces treads models T1-type treads treads type T2 T3 T4 type type treads treads) in four models, it is mainly based on things there is no front fender and perforated side panels division can also be According to customer requirements to be. :( By what method selection here is mainly based on the function of treads, and use the environment to division. There are in strict accordance with the drawings, engineering designers to perform design drawings.) 1. The flow of people up and down the stairs more, then wear There should pay serious front fender, whereas you can not add the front fender can reduce your costs. 2. When the installation is only fixed with screws or welded, bolted to add punch back side, not by direct welding thick plates.