Sehlahisoa se hanana le lintho tse senyang, joalo ka oli, asiti, alkali le letsoai. Likarolo tsa eona li entsoe hantle ka electroplating le polishing ho matlafatsa khanyetso ea eona ea ho bola ea lik'hemik'hale. Lisebelisoa tsa mochini o pakang oa Smart Weigh li latela melao ea FDA