The raw materials of this project are limestone and construction waste. The user's demand is to build two production lines, one for producing three common specifications and one for producing Water Stable Gravel. It is composed of ZGCX series 1038 feeder + XGN-Z series 1310 hammer crusher + 4YKZ series 2470 screen, which can produce 5-10, 10-20, 20-30mm, with an hourly output of 200 tons; the other production line uses Xingaonai Heavy Industry ZGCX series 1550 feeder + XGN-Z series 1615 hammer crusher, which can produce Water Stable Gravel with an hourly output of 600 tons.