QYM defence barrier

Defence barrier is a type of defensive barrier made of welded wire mesh and lined with heavy-duty fabric. It is filled with sand, gravel, or other materials to provide protection against blasts, ballistics, and other threats. 

Defence barriers are commonly used in military and security applications, as well as for flood control and other civil engineering projects. They are modular and easy to assemble, making them a popular choice for quick deployment in emergency situations.