烧粘土空心砌块|沙特标准|SASO-GSO-1421
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烧粘土空心砌块|沙特标准|SASO-GSO-1421
Hollow Blocks From Burnt clay for walls
墙壁用烧粘土空心砌块
Technical Regulation for Building Materials PartIV:Bricks,Tiles,Ceramics,Sanitary Ware and Relevant Products