Detailed Product Description 1) we are manufactures and leading export switch box,junction box,pipe fittings ,conduit fittings,control box.and so on 2 ) Exports the types of trunking fitting has five kinds of about: flat angle, 20*10 24*14 39*19 60*22 100*27 internal angel, (20*10 24*14 39*19 60*22 100*27 external, ( 20*10 24*14 39*19 60*22 100*27 flat tee, 20*10 24*14 39*19 60*22 100*27 ) ...