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      PERFO

      Long-Distance High-Temperature Water Transmission Pipeline Project in Northern Qingdao

      Total length: 13.5 km. Transmission pipeline: 2×DN1400. It meets the heating needs of users in  around 20 million m2 in the northern part of Qingdao and surrounding areas.

      2019天天看夜夜看狠狠看噜片_无码专区狠狠躁天天躁_台湾中文娱乐综合she天天_夜夜爽狠狠天天婷婷五月