国产精品99久久久久久董美香,九九免得黄色视频,亚洲中文字幕无码中文字无摸,久久精品国产一区二区三区不卡

Brief introduction：

Outline

◎BHVAC-□ Explosion-proof heating ventilation air conditioning unit of KNEXCN is explosion-proof electrical product

certified by ATEX / IECEx / EAC / CHINA and used for Zone 1, Zone 2, IIA, IIB, IIC class, T1 ~ T4 group.

◎ Applicable to online analytical cabin, control room, operating room, electrical room in petrochemical, marine and

other fields where there are requirements for positive pressure ventilation, indoor temperature and humidity

regulation.