Our factory occupied about 10,000 suare meters. We have our own trading company. The annealed turnover is more than USD 19,045,000.00. Black wire 1. diameter: 0.2mm-4.0mm 2. tensile strength: 300-550N/mm2 3. Type:Hard black wire and Annealed black wire 4. Production Process: Steel rod coil →Wire Drawing→wire annealing→Rust Removing→Acid Washing→Boiling→Drying→oil coated →Wire coiling