Materials: Aluminum frame, glass fiber mesh, high quality plastic accessory.
材质：铝合金框，玻璃纤维网，优质塑料配件。
In the alteration project of a gymnasium complex building, accessory building and four frame columns supporting the grid roof were removed to construct a stand.
某风雨操场综合楼改造工程拆除了辅助用房及支撑网架屋面的四根框架柱改造成为球场看台。
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