Heat and sound insulation and anticorrosion insulation and painting materials.

热绝缘、声绝缘、防腐蚀绝缘和油漆材料。

youdao

Heat and sound insulation and anticorrosion insulation and painting materials.

热绝缘、声绝缘、防腐蚀绝缘和油漆材料。

youdao