GNP-2 cardboard bursting tester (hereinafter referred to as the instrument) is the basic instrument for testing the strength performance of paper and cardboard. It is a new type of instrument researched and developed by our company according to the new national standard. Components, single-chip microcomputer, reasonable structure and multi-functional design. It has various parameter testing, conversion, adjustment, display, memory, printing and other functions included in the standard. Its various performance parameters and technical indicators conform to the standards of ISO2759 "Cardboard - Determination of Bursting Strength" and GBT 1539 "Determination of Bursting Strength of Cardboard", and it is suitable for bursting strength tests of various paper and cardboard.