<h1>Input-output norms suspended for optical brightener; imports must be verified to match inputs actually used in export manufacture.</h1> Suspension of prescribed Standard Input Output (SION) norms applies to the FTP classification for Optical Brightener (C.I. Fluorescent Brightener 28). The record lists specified chemical inputs and normative quantities, but the SION has been suspended. Applicants importing inputs for export manufacture must determine and verify the proportion of inputs used and ensure imported goods correspond to those required in the export product.