... our company and factory10.Offer 12 hours online service. CustomAll the orders could be customized with style, fabric material, color, size ... before shipment Struction for mass production quanlity1.Our mass production follow the last preproduction samples ,but it’s human work ,so there ... ’s hard to control.2.Within 15 days after the customer get the tshirts, if have few serious quanlity problem, we can ...