Belt conveyer, which owns many advantages such as large amount of conveying, simple in structure, convenient in repair, with standardized parts and so on, widely used for conveying of incompact materials or articles in general conditions, conveying ways cover single machines, multiply machines or conveying system which is made up of others conveying equipments in horizontal type of leaning type, for satisfying operation lines of different arrangement types. The use range of environmental temperature: -20℃ to +40℃, and temperature of conveying materials is under 50℃. Design of project, process flow, design and production of standard or non-standard products.