EMT Coupling 1. Aluminum material emt coupling,mostly selling to South east asia/south and central american 2. C/W electr EMT Coupling (Alu.)1. Start selling to those products to south and central american because the zinc material up day by day, the alu.material popular and start to using alu. material as alternative material for the conduit connection2:Sizes: from 1/2" to 2", bigger sizes make ...
