There are three possible sources of this rubber band: industrial waste (the condoms in the rubber band may be unqualified waste, which flows out from the condom manufacturer), foreign garbage (which may be foreign "foreign garbage" bought and reused at a low price) and recycled condoms. However, some people give different opinions. Collecting used condoms is time-consuming, laborious and uneconomical. Rubber bands should not be made of used condoms.