... weld 3,longtime insulation 4,various packaging style our gift items:vacuum flask promotional gift items:basic details: *capacity:500ml+220ml*2 *packing ... manufacture our bottles to very strict standards from the highest quality materials. They are incredibly tough, but if one of our ... )we can provide samples for u kindly to show our quality(it goes below):i,sample making time:5-7daysii,sample ...