Is the molded polystyrene board and the polystyrene foam the same?
Tunnel projects are part of the larger risk of the project, before the construction, construction enterprises should be tasted fried envy and darling of the city, when the preparation of a special construction program. But generally there is a cave, dark river, gas, rock burst, mud, quicksand, fault and other geological complex
This practice does not conform to the routine, gypsum board or Etter board should have light steel keel, when the smooth muscle pull can be made Jiu Jiu snow explosion abrasive wood keel can be installed, but that does not meet the fire and fire requirements, public buildings and formal approval of the building is not May be used. You are sure that it is gypsum board rather than other materials such as insulation materials, PVC materials. Gypsum board directly posted (hanging) on the wall seems not reasonable, that is not moisture, and no strength, that is not economic, nor does it apply, unless it is modeling background wall grassroots.
