aluminum alloy insect screen ISO9001 BWG31,32 mesh20*20,18*18,16*16,18*16,18*14 plastic,fiberglass,stainless steel,pvc,alumi ... aluminum alloy insect screenOur main products include welded wire mesh, ... prevent insects and bugs from entering.Materials: low carbon steel wire, stainless steel wire, Al-Mg Alloy wire, galvanized wire, PVC wire ...