The bulletproof fabric is made from high-strength UHMWPE fiber with a Uni-Directional (UD) structure. The high-strength UHMWPE fiber has good performance when against the impact of the high velocity of bullets and, the UD structure can transfers the power quickly than women fabric in a short time. Step 1: Choose UHMWPE fiber or Aramid Fiber That has much fiber that can make bulletproof fabric. The Aramid fiber and UHMWPE fiber is the popular fiber today in the world. The tenacity of aramid fiber has ~22cN/dtex and for the UHMWPE fiber, the tenacity over 36cN/dtex today, which has over 40% stronger than aramid fiber. The well known main difference between aramid and UHMWPE fiber are: UHMWPE fiber is stronger and lightweight than aramid fiber Aramid fiber can heat higher temperature up to 500 degrees For more information, please see What is Ultra High Molecular Weight Polyethylene Yarn? and What is Aramid Fiber? Step 2: Choose Uni-Directional (UD) or Woven Structure The Uni-Directional structure is the fiber layer as 0/90 or 0/90/0/90 or 0/90/0/90/0/90 or more times. All fiber has no cross. The UD structure has fast transfer when the fiber heat high power impact so, it is better than woven structure as we knew. The woven structure is classic plain or similar which is easy to make by weaving machines. for more information, please see what is a uni-directional (UD) structure? Step 3: Use Right Resin The resin is the main material except for the fiber. It is very important for high-performance bulletproof fabric. It cannot order directly from outsourcing so, it always develops by engineers. Step 4: Use Professional Machine It just needs one professional machine to make bulletproof fabric after decided fiber and structure. The machine can spread evenly fiber on special film and fix with resin and then, laminated each