The manufacturing method of the gold heart sutra bracelet is: cutting, briquetting, firing first, selecting a suitable steel mold according to the size of the bracelet, pressing the font of the heart sutra on it, making a suitable cambered surface, welding on both sides, then polishing the surplus corners smoothly, and finally sandblasting for shipment. The whole process is very long and needs a very experienced factory to make it. Otherwise, the bracelet made is easy to make mistakes. This answer is for reference only. Don't be blindly superstitious.