Protective plug board is a type of equipment used to enhance human protective capabilities, usually used in conjunction with tactical vests and other protective clothing. Its main function is to block the damage of bullets, shrapnel, and sharp objects to key parts of the human body, effectively protecting the safety of the wearer.

From the perspective of materials, common ones include ceramic materials such as boron carbide, silicon carbide, and aluminum oxide ceramic plates, which have extremely high hardness and can effectively crush bullets, disperse and absorb bullet energy; There are also high-performance fiber materials such as ultra-high molecular weight polyethylene, which have the characteristics of light weight and strong toughness. Bulletproof inserts from companies like Beijing Tongyizhong are made of ultra-high molecular weight polyethylene (UHMWPE) fiber non-woven fabric and ceramic composites.

In terms of performance, the protective plug board can meet different protection level standards. Taking the products of Chengdu Jin'an Equipment as an example, they can effectively prevent the 53 type 7.62mm armor piercing incendiary bomb (strong charge bomb) with a speed of 878 ± 10m/s from 3 rounds at a distance of 15 meters, and the instantaneous deformation of each round is ≤ 35.0mm. The weight and thickness of the protective insert plate are also constantly optimized to ensure protective performance while minimizing the burden on the wearer and improving their mobility.

In application scenarios, protective plugs are mainly used in military operations to provide soldiers with critical protection against enemy bullets; Law enforcement agencies also use protective plugs when carrying out high-risk tasks, such as police handling gun violence cases and rescuing hostages, which can greatly reduce the risk of injury; In addition, security personnel will also be equipped to protect important individuals and respond to dangerous emergencies, providing security guarantees for the execution of tasks.