"Safety warning belts are commonly used for isolation of construction areas, dangerous areas and traffic accidents and emergencies.As well as electrical maintenance, road administration, environmental protection projects.It can be used to delineate the accident site or special area of warning code.The guardrail is easy to use and will not pollute the environment."...
https://www.filmzt.com/packaging-materials/custom-printed-pe-non-adhesive-warning-tape.html