Japanese colored marking pens duly certified for low halogen < 200 PPM and sulphur < 50 PPM for marking on special S.S. & nickel titanium alloy components now available in India with FerroChem. These Marking Pens are available in four different colors black, red, blue & white. Along with these, marking pens test certificate confirming the sulphur and chlorine fluorine contents is provided. Marking pens have wide applications such as marking various joint, locations, defects on pipe lines, various type of vessels, castings etc. Very useful for industries like refineries, fertilizer, aerospace, special fabrication, gas and oil pipelines, nuclear, NDT service providers to these industries etc.