男女高潮又爽又黄又无遮挡,337人体做爰大胆视频,漂亮人妻被中出中文字幕,欧美精品V欧洲高清视频在线观看

En

Low ambient temperature air source project- workshop & office room heating

Project Introduction

The factory is located in Changchun City with an average temperature of -15.0 ~ -5.0 in winter. The office building covers an area of 1900m2 and the workshop covers an area of 2900m2 (floor height of 4 meters), which need heating. A Hanbell LT-S-A ultra-low ambient temperature two-stage heat pump compressor R22 system is used, which can ensure that the office temperature is above 20 and the workshop temperature is above 15, so as to achieve the purpose of decontamination and emission reduction and clean energy heating.

image.png