Step 1, first perform the laser cutting process, cut the font edge, and ensure that the metal stainless steel characters are not deformed. 

 Step 2, the welding process, ensure the smoothness of the stainless steel surface, and then perform the grinding and polishing process. 

 Step 3, install the LED light source, which must be evenly distributed on the bottom plate, and the wiring and LED lights need to be reinforced. 

 Step 4, the bonding process of the metal stainless steel characters, bond the panel and the buckle edge to make it flat, and avoid light leakage and water seepage in the later stage. 

 The above are the process steps for customizing metal stainless steel characters, I hope it will be useful to you.