Folding iron ring binding is generally divided into 2: 1(2 1 hole) and 3: 1(34 holes). Among them, the binding effect of 3: 1 iron ring binding machine is more exquisite, which is suitable for binding thin characters and is suitable for general design institutes, planning bureaus or small and medium-sized printing centers. 2: 1 type is suitable for binding thick documents. Binding machine, also known as ten-hole binding machine, is simple in operation, neat in binding, beautiful and generous, and suitable for various occasions. One of the common binding methods in graphic shops. It uses plastic wicker to bind financial statements and other financial forms, which has the advantages of long storage time and not easy to rot and damage. A financial binding machine is mainly composed of the following aspects: a table, a safety cover, an operation panel, a hose socket, a release button of a paper pressing device, a drill needle seat, a drill needle, a paper pressing plate, a gasket, a paper scrap box and a power supply. Operation method of financial binding machine: 1. Put the financial statements neatly on the table and drill the needles. 2. Press the cardboard button on the control panel to repair the report. 3. Tie the willow tube and press the drilling button on the control panel. 4. Press the binding key to complete the binding of the report.