不锈钢弹簧螺母 Spring Nut
玻璃纤维Filament tapes
C型钢Keel
纸带Paper tapes
金属护角带Metal Corner tapes
铝箔胶带Alumunium Foil Tapes
复合式PVC排风管PVC Ventilation Exhaust
铝箔排风管Aluminum Foil Ventilation Exhaust
铝箔通风管Aluminum Foil Ventilation Exhaust