1. Aluminum gusset plate surface layer 2. Middle keel U50 × 19 × 0.5 medium distance <1200 3. Large keel [60×30×1.5 (hanging point hanging) medium distance <1200 4.Ф8 steel bar hanger, two-way mid-range 900-1200 5. Retaining Ф6 iron ring in reinforced concrete slab, two-way mid-range 900-1200 Medical Uv Lamp,Safe Uv Light,Uv Lamp Power,360 Nm Uv Light Guangdong Kingrate Optoelectronic Technology Co., Ltd. , https://www.kingrateuv.com