<h1>SION suspended; exporters must determine and certify input proportions-e.g., 0.132 kg petroleum coke per 1 kg calcium carbide</h1> Standard input-output norm for calcium carbide lists that producing 1 kg of calcium carbide requires 0.132 kg of uncalcined raw petroleum coke; the specific SION entry has been suspended by a public notice. The provision mandates determination of input proportions for manufacturing resultant products and requires applicants to ensure that imported inputs correspond to and are actually used or required in the specified export product.