Cement manufacturers on Friday expressed disappointment over the GST council retaining cement in the highest slab of 28 per cent saying clubbing the construction material along with luxury item is ‘quite unfortunate’. The Cement Manufacturers Industry (CMA) said it was ‘disappointment’ for the entire industry, which is integral to the Government's key schemes such as housing for all, Swachh Bharat related constructions and building and other key infrastructure projects.