Hello, we are SAMHOON Engieering Co., Ltd which is specialized in CBRNe Facilities, Thermal Sights, NBC Filter & Mask, Blast Valve, Special Doors (Blast Resistant, Fire Rate (~3hrs), Bullet Proof, Water Proof etc..) in South Korea. Our company has been established since 1993, and we have many international experiences. If you have any questions, please feel free to us (, ). Also, please visit so that you can find more information about us. Sincerely, Moo