สรุป: This video explains the main functions and practical uses of the 316L Stainless Steel Electroplating Polishing CNC Milling Metal Beauty Needle in a clear, step-by-step format. You will see a detailed walkthrough of its precision manufacturing process, from CNC milling to specialized electroplating and high-gloss polishing, showcasing how this instrument achieves superior durability and a flawless finish for luxury aesthetic procedures.