Testing Tactics of Forging Seals and Document by the Way of Laser Carving

Laser carving is a combination of contemporary laser,computer,digital control and electronic technology.It integrates the light,machine,and electricity science into one body and improves the level and speed of carving seals,and it is widely used.However,crimes of forging seals by the technique are increasing;furthermore,it's hard to tell the genuine from the fake.The test of the cases is a big challenges the technical staff are faced.Ways to deal with it have to be found out and updated.