... Looping In Circular Box Iron,ISO9001 Hot-Dipped Galvanization,Black Enamel 20/25/32mm BS4568,BN50086 Standards Item:Black Enamel Looping In Circular ... :1-hole,2-hole,3-hole,4-holeBlack enamel looping in circular boxes,to BS4568 and EN50086 standards.Best quality and ... reasonable price.We can produce the black enamel looping in circular boxes according to your samples or drawings,also we ...