What brand of attendance machine is good?

The following attendance machines are all good brands, and their sales are among the best in the country, and they are also the most used by users. They are all brand attendance machine manufacturers. Please refer to the following:

1 Kong Zhong (Beijing Kong Zhong Science and Technology, a world-famous biometric core technology, Beijing Kong Zhong Zhilian Technology Co., Ltd.)

Comet Comet Komi (1993, Komi Electronics Co., Ltd., one of the largest and most professional brands of shredder attendance machines in China)

3 All-pass QET (Top Ten Attendance Machine Brands, 1997 China's most famous attendance machine brand, Shenzhen All-pass Technology Co., Ltd.)