EPC general contracting is a commonly used engineering construction organization method at present, which means that the company is entrusted by the owner to implement the whole process or several stages of contracting for the design, procurement, construction, trial operation, etc. of the engineering construction project according to the contract. This contracting model has been active in various engineering fields and has been widely promoted and adopted. The general contracting model has such highlights as clear rights and responsibilities, fixed total price, and quick returns. Xin Gao Nai Group has independently developed a new generation of intelligent environmental protection stone production line.