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Is the Fu Guang mug safe?

Safe.

Fu Guang thermos cup has been tested by Hefei Municipal Bureau of Quality and Technical Supervision, and it is safe, reliable and qualified. Fu Guang thermos cup is made of high borosilicate glass, which has extremely high strength and excellent high and low temperature resistance, acid and alkali resistance. More importantly, even if it is used for a long time, it will not volatilize some harmful components, and its thermal expansion is only one third of that of ordinary glass cups.