Amazon has suspended many sales of hoverboards over safety fears, the gadget site BestReviews first reported. The company has asked all hoverboard manufacturers to provide documentation showing that they are following necessary safety standards.

Swagway, one of the well-known importers of hoverboards, told The Verge that Amazon asked manufactureres  to show “documentation demonstrating that all hoverboards you list are compliant with applicable safety standards, including UN 38.3 (battery), UL 1642 (battery), and UL 60950-1 (charger)”. This company has also said Swagway already meets this requirements, and its products are still available on this marketplace.

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