Curious about how custom-shaped tattoo needles are actually made? In this video, we take you inside Dongguan Yue Lin Sen Metal Technology's ISO-certified facility to show the precision machining process behind non-standard metal medical instrument parts. You'll see high-precision CNC lathes, lathe-milling compound machines, and a 100,000-grade dust-free workshop in action — including laser cutting of stainless steel capillary tubes, tapering, capping, bending, and stamping. A practical walkthrough for B2B buyers seeking reliable custom manufacturing.