Y4500 the hot-in-place recycling train is developed by Senyuan Company, which is a national "863" plan project, a national key new product, and a national torch plan project. The asphalt pavement hot-in-place recycling train with international advanced level consists of three pavement heating unit, one heating & scarifying unit, and one heating & remixing unit. The paver, road roller and dump truck are the necessary auxiliary equipment. When grouped together for continuous operation. It is used for large-scale continuous rehabilitation of high-grade highways and urban roads, with functions such as in-place heating, scarifying, adding rejuvenating agent, adding new aggregates, mixing old and new asphalt mixture, drying, paving, leveling, and compacting.It can form a new road at one time, and 100% of the old road asphalt mixture can be recycled in place. It has the characteristics of saving resources, reducing environmental pollution, not closing traffic during operation, and having very significant economic and social benefits.The unit adopts an integrated design and applies advanced technologies such as hydraulic drive, bus control, electronic sensing, and hot air circulation.