Black back strip strip thickness and smooth surface board planing width precision accuracy annealing evenly without heavy leather Ma Hang no cracks no quality problems unconditional return policy. Our company specializes in the production of ordinary annealed (black back) strip, bright annealed steel, chilled steel, galvanized steel, can straightening flat oiled, cut-off level. Your satisfaction is our greatest support, we will continue to stand in the customer's point of view, for customers to create the most professional black annealed steel strip, if you are interested, you can direct dial telephone selling, we look forward to your calls. Tel 0316 -7497858 13103262822