http://rd.rottenswamp.ru/story.php?title=warning-signs All these Safety Warning Signals should be utilized to make folks conscious of a local threat. For instance, Danger Signals, Hazard Symbols, Electrical Safety Caution Signals, Hazard Signs, Hazardous Signs, Warning Danger Signs may be used to signal a flammable liquid shop or a laboratory where radioactive substances are in use should have an appropriate Warning Sign close to the entrance. Thu, 19 Dec 2019 09:39:38 UTC en