When was the vacuum flask invented and made? Archaeologists once found a double-layer container in the ruins of Pompeii in ancient Rome. This container may
BPA mainly increases the transparency of plastic water bottles and plastic cups, so don’t over-pursue transparency when choosing plastic water bottles. BPA belongs to phenolic
PC(polycarbonate), one of the most common plastics. This material itself is non-toxic, especially for making baby bottles, space cups and so on. It is controversial