To accommodate cleaning-free methods, changes have to be made in many parts and aspects of the manufacturing process, which can only be ready for the production line after being tested one by one.
為了配合免洗方式，電路板上銲接用的錫膏、銅版、製程中的許多參數… … 等，都要隨著改變，一次次測試修正後才能用在生產線上。