roof truss system 1.high load capacity 2.TUV ISO 3.easy to ... yearProduction lead time:10-15daysPacking:air bubble film,carton,or custom Feature of the truss1.non-rust,firepoof,hardwearing,light weight ... ,speker truss,etc. The truss lift tower Accessories of truss system Our company main products:aluminum truss,bolts truss,spigot truss ...