My company"s patent product " synchronous slurry injection pump " ( patent number: ZL00 240860 ) since its inception in 2000,the product in a quick-setting demanding subway double liquid grouting pump obtained remarkable result in at the same time, the market of counterfeit products follow close on succession, the only copied its appearance but without any synchronous slurry function, can not meet the requirement of double liquid grouting technology, all units undertaking projects to be identified, or call the company technical department.