4 Sash guides shall be constructed from corrosion resistant polyvinyl chloride or equivalent material.
4 Sash guides shall be constructed from corrosion resistant polyvinyl chloride or equivalent material.
移门导向装置由抗腐蚀的聚氯乙稀或相近材质构成。
4 Sash guides shall be constructed from corrosion resistant polyvinyl chloride or equivalent material.
移门导向装置由抗腐蚀的聚氯乙稀或相近材质构成。