Coal mine nitrogen injection technology is a series of innovative products developed for the demand of underground coal mining market. They can effectively inhibit the gas explosion and coal dust explosion of underground coal mine, and provide a strong guarantee for the safety of underground coal mining operation. We provide horizontal mobile nitrogen injection products for underground coal mining operation, especially super large nitrogen injection products, which fill the gap that domestic can not provide underground nitrogen injection products. We also actively expand the scope of products and services, and the successful development of fixed and mobile series of products on the ground has made it convenient for users to choose products.