+ISO9001:2008 CE RoHS for metal extrusion box +Provide OEM service +mearly 10 years making experience +Resonable price ... Junction Box4 Material: Stainless Steel, Iron(SPCC, SECC, SPTE, Tinplate), Aluminum Alloy, Red copper, Brass, Bronze alloy or according to your ... . Any question, please feel free to contact us. metal extrusion box