<h1>Standards for graphite heat exchanger input-output ratios per export unit; applicants must match imported inputs to export product</h1> Standard input-output norms are set for graphite heat exchangers (cubical block, shell & tube, circular block), specifying permitted input types and quantities per unit export: graphite block 1.57 kg/kg, graphite tube 1.37 kg/kg, non-alloy steel sheet 1.22 kg/kg, bellows 2 nos., bellow seal assembly 1 no., gasket 57 m, flame arrestor 2 nos., PRP blower 2 nos., quartz glass 1 no., O-ring 9 nos., spring 5 nos. The schedule, currently suspended under a public notice, governs determination of input proportions; applicants must ensure imported goods correspond to those used or required in the export product.