Raw material is important for heat transfer vinyl and can define the htv quality. For example, color powder and glue are two important parts of the vinyl. Good quality color powder and glue will make the vinyl more beautiful and easy adhered, otherwise it is easy to fall off from fabrics. In this case, we will only know the vinyl quality after using it.We need find good supplier who can promise continious quality. Dongguan Yanyan Heat Transfer produces high quality heat transfer vinyl with best quality environmental friendly raw materials to ensure the quality of finished htv vinyl. Besides, Yanyan has advanced work shop, first class equipments, full quality control system. so pls rest assured to order heat transfer vinyl from Yanyan.