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| Items | Specifications |
|---|---|
| Main structure | PEB Welded H-shaped steel or hot rolled steel, Q355 or Q235 |
| Anti-rust protection | Hot dip galvanized or anti-rust painting |
| Purlins and girts | Cold rolled C or Z steel, Q355 or Q235 |
| Roof and wall | Single layer steel sheet or sandwich panel |
| Gutter | Heavy duty galvanized steel |
| Down pipe | PVC |
| Door | Sliding door or roller shutter |
| Windows | PVC or aluminum alloy |