QB/T 4993-2016 宣纸邮票纸

QB/T 4993-2016 "Xuan paper postage stamps paper" is the Chinese term for a type of paper used for stamps, but its exact translation is unknown to me. Typically, postage stamps are printed on sticker paper or high-quality cardstock, and some countries may use specially-made stamping paper for their stamps. In any case, if you have specific information about this type of paper, please let me know so that I can assist you further