请在定货时提出；
Working temperature: -40℃ ~ +40℃;
◆ 空气相对湿度：不大于90%（+25℃）；
Relative air humidity 90%（+25℃）;
◆ 安装场所：无剧烈振动、爆炸危险化学腐蚀的地点；
The equipment should be installed in a stable and less corrosion area;
◆ 特殊条件：由本厂与用户协商确定。
For special requests, please discuss with the manufacturer.