日本最新特黄A级视频,人人妻人人爽人人叫,本道AV无码一区二,久久中文字字幕乱码久久午夜

Hebei provincial housing and construction department recently issued the "guiding opinions on promoting the intelligent building of urban heating", and clarified the goal of intelligent heating in the next 3 years. To 2020, the central heating system of the heating enterprises basically completed the unattended heat transfer station. The heating area over 2 million square meters, basically building an intelligent heating system; If has the condition, building environmental monitoring systems, security systems, heating systems and services for thermal management system. The urban intelligent heating supervision and command system should be built in cities with total heating area of more than 20 million square meters.