We are specialized in manufacturing of various styles of paper envelope printing,letterhead printing.OEM orders are welcome! Product Description Size:standard sizes: B4,B5,B6,C3,C4,C5,C6,DL North America sizes: A1,A2,A6,A7,A8,A9,A10,#6¾,#7¾,#9,#10,#11,#12,#14; or according customers requirementsPrinting color:Single color,..