Steel structural parts are made of high quality steel materials with characteristics of sturdy fabrication and high supporting and then phosphorized and painted .

 
  • 冷卻塔的鋼結鉤件部分選用優(yōu)質(zhì)鋼材制成,制作堅固平衡,支承強度高,并經(jīng)過(guò)熱浸鍍鋅處理,在濕熱條件下,具有較好的防腐、防銹性能。
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国内精品美女A∨在线播放xuan