The working principle of stun gun

The working principle of stun gun

Date: Apr 27,2019
What should I do if sprayed with a pepper spray?

What should I do if sprayed with a pepper spray?

Date: May 26,2019
How is the level of protection of bulletproof equipment divided?

How is the level of protection of bulletproof equipment divided?

Date: Jun 05,2019
How to use the stun gun device correctly？

How to use the stun gun device correctly？

Date: Jun 25,2019
how to use all type of baton？

how to use all type of baton？

Date: Jul 08,2019
Sino-US trade war -Trump defends China trade policy

Sino-US trade war -Trump defends China trade policy

Date: Aug 01,2019
Several of the most popular melee weapons

Several of the most popular melee weapons

Date: Aug 07,2019
Hong Kong protests

Hong Kong protests

Date: Aug 09,2019
The development History of US special operations forces

The development History of US special operations forces

Date: Aug 14,2019
A shooting case in Philadelphia,Six policemen had injured.

A shooting case in Philadelphia,Six policemen had injured.

Date: Aug 15,2019
The application and kind of stab-proof vest

The application and kind of stab-proof vest

Date: Aug 20,2019
some knowledge about 89 heavy machine gun

some knowledge about 89 heavy machine gun

Date: Aug 23,2019