Input-output norms require imports to match declared inputs for expandable polystyrene resin used in export production. Input-Output Norms for Expandable Poly Styrene Resin require adherence to specified input-to-output proportions, exemplified by the resin-to-monomer relation, and mandate that applicants ensure imported goods are those used or required in the declared export product; the H84 entry is recorded as suspended by Public Notice.