1%-5%。 Loss refers to loss or consumption, and the loss of extruded ceramsite board is between 1%-5%. Extruded ceramsite board is made of cement, ceramsite, sand and cinder as main raw materials, and embedded with steel bars. Through electronic measurement and accurate proportioning, the round-hole wallboard extruded by special machinery is cured by steam 12 hours, and then cut into plates by marble slicing method.