The carol bowl is made of a metallurgical mixture of 5 to 12 metals, mainly brass. In the process of producing the carol bowl, the metal is melted and mixed together, cooled in the mold and then made into the crude embryo of the carol bowl. However, due to casting reasons, it is inevitable that bubbles or uneven phenomena will appear in the interior, so it is necessary to heat again and beat carefully by hand, so that the uneven body wall becomes uniform, the loose quality becomes fine and dense, and the hammer printing connects into a complete layer! It takes a few days to complete the process in the hands of the craftsman, and it is even more precious to show that the eulogizing bowl is precious to show that it will take a few days to complete the process in the hands of the craftsman, which is very simple and simple to sum up to the manufacture of the eulogizing bowl. However, because each carol maker, the origin of each eulogy bowl, has its own mixed formula, and the exact content of different metals depends on the producer, it is because of this diversified mixed formula that a variety of sound frequencies and timbre can be obtained.