संपूर्ण क्रान्ति है तो जहां है

bio toilets , new seats ,cleaniness etc

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ISO International Standards ensure that products and services are safe, reliable and of good quality. For business, they are strategic tools that reduce costs by minimizing waste and errors and increasing productivity.
An authorised institution gives the chart of materials tobe used...(bill ofmaterials and quality,and quantity).non iso rakes made with their own techonology and using anymaterial,any screw,any welding and other tools and tackles.. simple difference is chicken made by kfc and made in our houses.

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but sir why they use it for specials

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if lhb rakes can be useds as spl then y not iso , since iso rakes of particular train is vaccant so er is using this rakes

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