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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB 50404-2017 |
Technical code for rigid polyurethane foam insulation and waterproof engineering 硬泡聚氨酯保温防水工程技术规范 |
China National Standards Technical code roof |
 English PDF |
| GB 50345-2012 |
Technical code for roof engineering 屋面工程技术规范 |
China National Standards Technical code roof |
English PDF |
| GB 50693-2011 |
Technical code for slope roof engineering 坡屋面工程技术规范 |
China National Standards Technical code roof |
English PDF |
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