Moreover, the walls of the final treatment, but unburnt earthenware Nizi, such letters will benzene in Qiangli and long infiltrate wall, the dissemination of harmful gases not go out on forever.

• 更何况，在墙面的最后处理上，还要坯腻子，这样会把苯封在墙里，并漫漫渗透到墙体里，这种有害气体就永远散发不出去了。