90D+ hydraulic wet spraying machine is a machine, electricity, and hydraulic three-in-one device, widely used in highways, railways, infrastructure, slopes, bridges, tunnels, and other projects. It utilizes hydraulic pump thrust to make the oil cylinder move alternately for feeding, and after accelerating the curing agent at the compressed air and nozzle, it sprays onto the sprayed surface. Its production capacity is 5 - 9m³/h. The equipment has stable performance, few vulnerable parts, and low maintenance costs. It has a high degree of automation, centralized PLC control, and simple operation. The conveying volume can be adjusted as needed, and the addition of the curing agent is infinitely adjustable. It is equipped with an automatic lubrication system to extend the equipment's lifespan. In addition, the hydraulic spraying concrete machine is compact and has a wide range of applications, with small spraying pulsation, good continuity, large spraying volume, strong power, energy-saving, environmentally friendly, and time-saving, making it the best choice for new era infrastructure construction.