Kim-sio̍k ka-kang (金屬加工), kán-chheng kim-kang (金工), sī chi̍t chióng kā kim-sio̍k bu̍t-liāu ka-kang seⁿ-sêng to̍k-li̍p lêng-kiāⁿ, cho͘-kiāⁿ, ia̍h-sī tōa-hêng kiat-kò͘ ê kang-gē ki-su̍t. Chit-ê su̍t-gí hâm-kài ùi tōa-hêng chûn-chiah kàu cheng-bi̍t hoat-tōng-ki pō͘-kiāⁿ. In-chhú, i pau-koat siong-èng ê kóng-hoàn ki-lêng, liû-têng kap kang-kū.