Square windown screen is galvanization,It have two colour,like:write,blue write.As general rule ,it is iron again use gaivanized.

Square wire mesh’s function ;Itgeneral use architecture,and school playground as guardrail,and so on.

Square mesh number:Have 2*2 3*3 4*4 5*5 6*6 8*8 10*10….We can cccording to your need.