By adopting the compound mold of die mold, furan resin sand and graphite sand, the heavy duty thin wall complex Al-alloy castings have been successfully produced.
采用金属型、呋喃树脂砂、石墨砂等复合铸型，成功生产了大型、薄壁、复杂铝合金铸件。
2
As the substitute structure of the brick mixed structure, CL light dutycompound wallboard building system structure has great advantage in economizing the energy.