建jian材cai，金jin屬shu材cai料liao，鋼gang材cai，機ji電dian設she備bei，五wu金jin交jiao電dian，儀yi器qi儀yi表biao
，橡xiang塑su製zhi品pin，通tong風feng製zhi冷leng設she備bei

，計ji算suan機ji軟ruan硬ying件jian
，電dian動dong工gong具ju
，電dian線xian電dian纜lan，水shui處chu理li設she備bei，光guang機ji電dian，通tong訊xun器qi材cai銷xiao售shou
，從cong事shi貨huo物wu及ji技ji術shu的de進jin出chu口kou業ye務wu