1. do not place obstacles walkway.2. storage device every time after use.3. work with caution and with a conscious.4. do not place anything of emergency barred doors.5. be careful of hot alkali.
1. Do not place obstacles in the path 2. storage equipment after you're done with caution and be mindful 3. 4. Do not put the barricades exit 5. Beware of hot spots.