Shenzhen XHL Industrial Development CO., Ltd had ever in sublimation coating machine , sublimation blanks 15 years ago .Now we innovated a kind of sublimation heat shrink film bag which can easy transfer without any heat transfer machine . You just need cover the shrink film on mugs , tiles , or other sublimation blanks , and put them into the oven and design time and wait the finished products about 170 degree 8 minutes .