... protect aircraft, vehicle, naval vessel and making bullet-proof vest.boron carbide bulletproof armor,b4c armor tile Description:Boron carbide ... protect aircraft, vehicle, naval vessel and making bullet-proof vest. Typical Chemical Analysis:Total Boron 77.90%Total Carbon ... . Key words:boron carbide bulletproof vest armour, boron carbide body armor, b4c bullet proof vest, b4c bulletproof shield, b4c body ...