How to color anti-theft screens produced by the diamond mesh

Vulcanization method: Immerse the diamond screen anti-theft screen in 10% oxalic acid solution, wash and dry and then immerse in 1% sodium sulfide solution. A black film is obtained. This method is beautiful and well decorated.Diamond screens color the stainless steel in a strong alkaline aqueous solution which contains oxidants and reducing agents. It is characterized by the use of naturally grown thin films to grow oxide films of different thicknesses.