Awọn alaiṣẹ iṣẹ ọwọ ati oluṣatunṣe orin jẹ iṣelọpọ ni ibamu si boṣewa OEM.Ti a ṣe lati irin yika, ọpa pin akọkọ ti o wa ni aiṣiṣẹ yoo jẹ lile nipasẹ itọju igbona lile igbohunsafẹfẹ aarin lati rii daju lile rẹ.Nibayi, ikarahun alaiṣiṣẹ jẹ simẹnti nipasẹ irin pataki.