... 50JFeature It is developed for jewelry and watch industry, integrated machine body and integrated panel control, more convenient. High quality ... Field of applicationRing, bracelet, necklace, pendant, tie pin, sleeve button which uses materials like gold, silver, platinum, titanium, stainless ... character height 0.25MM repeatable accuracy 0.005MM whole machine power ≤1.5KW power supply demand 220±10% ...