The prefabricated concrete sandwich insulation wall is composed of inner and outer concrete walls, insulation layers and connecting pieces.The connector has the characteristics of low thermal conductivity, good durability and high strength, which can effe
Petrol engine trainer equipment for Jetta is composed of two parts: the fixed bench of electronic control gasoline engine assembly and running accessories and the bench of running detection control panel.The engine can be started, accelerated, decelerated