Patent
Patent Certificate for Vertically Operated Special Scissors for Silver Tree Shearing in Jewellery Processing
Patent Certificate for Plaster Demoulding Equipment in Silver Casting
Patent Certificate for Multi-pattern Polishing Head Storage Tool Box for Jewellery Polishing
Multi-station Environmentally Friendly Recyclable Jewellery Polishing Table
Patent Certificate for Plaster Cavity Vacuum Wrapping Equipment for Silver Casting
Patent Certificate for a Kind of Windmill Pendant
Patent Certificate for a Kind of Fully Rotating Ring
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