A.硅酮密封膠 B.云石膠 C.透明膠 D.環(huán)氧樹(shù)脂型石材專用結(jié)構(gòu)膠
A.色差 B.暗裂 C.崩壞 D.破損
A.1.2m B.1.5m C.1m D.0.9m