The first day of school in the China falls on 1 September, or the first Monday following if September 1 is a Friday, Saturday, or Sunday. In northeastern China, schools open on Monday in mid-August after summer vacation.
3) Improper heating profiles setting lead to unbalanced heating zones temperature inside heating furnace, which causes uneven glass temperature on both different parts of the glass sheet and between the top and bottom glass surfaces, thus may brings irregular white haze on glass surfaces.
All of our glasses come with a standard 365 day manufacturerâs warranty. This covers any possible defect in the frame or lens that can reasonably be attributed to the manufacturerâs responsibility and not a result of normal wear and tear, accidental damage from handling or improper use.