适用范围：
1. 可燃性粉尘危险场所：20区、21区、22区；
2. 导电性或非导电性粉尘环境。
1. For the dangerous sites with explosive dust mixture:
20 division, 21 division, 22 division;
2. Electric of non-electric dust environmet
产品特点：
3. 可根据用户要求特制。
1. Diecasted of Al-alloy shell with moule-shaped outline and plastic-sprayed
surface;
2. Steelpipe and cable wiring;
3. Can be customized according to users" requirements.
