Flawed stamps (those lacking colors, improper borders, or spotted), are destroyed immediately. Working on the principle, "better to accidentally destroy 10,000 than allow one flawed stamp to go through," some 40 percent of stamps printed are removed and destroyed.
即使是很小的瑕疵，譬如一枚郵票面上有個小白點，一旦被發現，整張票紙（五十到二百枚）都要做廢票處理。在「零缺點」的要求下，監印人員「寧可錯殺一萬，也不願疏忽一枚」。