<h1>Suspension of C1660 classification for ratchet wheel plates requires verification of input proportions and matching imported materials</h1> Entry for ratchet wheel plates under engineering products (C1660) shows suspension per the referenced public notice; standard input-output norms require 1 kg of ratchet wheel plates and 1.50 kg of AISI 304 HR stainless steel sheets/coils per unit. The provision mandates determining the proportion of various inputs used in manufacture of resultant products and requires applicants to ensure that imported goods correspond to those used or required in the stated export product.