N350 revolutions decorative ring two colors

N350 speed decoration ring two colors

TBTA two-color decorative ring

JAB decorative ring two-color plating

JD small decorative ring two-color electroplating

JD large circle small circle two-color electroplating

JLR knob

One-touch switch decorative ring

SGM358 laser engraving ring components

S111 scale ring

192 decorative circle BAIC New Energy