Roohintarash Engineering co , with the aim of designing , manufacturing industrial machineries , Setting up Production line , manufacturing plastic spacer , KBK rails , Caps and closer was established in 1993 . Varieties of manufacturing and producing processes such as research and studying on projects , develop of manufacturing technology , designing of moulds , production lines plants , manufacturing process based on prepared plans , mass production and final process including coloring , coating , chemical plating and quality control of raw material , out put and producing process which are being done in this company.