日韩女人性开放免费视频|爱情岛av永久网址在线观看|欧美一级精品视频二区|成人综合伊人五月婷久久|亚洲а∨天堂在线播放2018

Steam heating, convenient water supply and drainage, reasonable thermal cycle, convenient temperature measurement, complete steam and water interface, uniform temperature, good thermal insulation and sealing, automatic temperature control, simultaneous cooling up and down, easy to open the cover, fast cooling cycle. The double steam solenoid valve is used to control the temperature, and a compressed air pipe is provided to ensure accurate water temperature control and uniform temperature. The insulation is sealed and the cover is convenient.