We are the leading manufacturer of products by brass, bronze, stainless steel. We have a skillful team of experienced engineers and most advanced machinery such as USA lost wax casting, USA furnace of medium frequency, Metal analysis spectro MaXx from Germany and CNC machines. We have the metal alloy according to USA standard (ASTM) to ensure the quality of our products does not have any harm to the consumers health and the environment. We proudly present to you our product range that have quality you can absolutely trust with reasonable Vietnamese price ! Solid Brass door bolt: - Brass alloy: 63% Cu, 35% Zn, Pb