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Thangka pendants & Gau boxes

Thangka Pendant (Window Pendant)

A zinc alloy pendant with a relief metal frame that holds a hand-painted or printed Thangka image behind a transparent cover. The shell is die cast in-house; the painting, printing, cover and chain are sourced from the supply chain; final assembly into the pendant is done in-house.

Overview

Made by
Qinxi in-house
Materials
Zinc alloy (Zamak 3 / Zamak 5) shell, Glass or resin cover (sourced), Paper / printed image (sourced), Brass or steel bail (sourced)
Finish options
Antique brass, Antique silver, Gold plating, Gunmetal, Enamel fill, Resin dome
Customization
Outer shape and relief depth, Image size and cover type (glass / resin), Plating and enamel colour, Bail or split-ring attachment

Applications

  • Pendant necklacesWorn as a necklace with an attached bail or bail ring
  • Keychains & charmsFitted with a split ring as a bag or key charm

Selection tips

  • Decide hand-painted versus printed image early: hand-painted reads premium but is slower and less repeatable, printed is consistent and cheaper.
  • Specify the cover material: glass scratches less but is heavier and more fragile, resin is lighter and safer for children-exposed items.
  • Jewellery is held to stricter lead and cadmium limits than umbrellas; confirm REACH Annex XVII and CPSIA thresholds with the buyer.
  • EU skin-contact items need nickel-free plating to meet REACH nickel-release limits.

Manufacturing process & quality control points

Qinxi in-houseSupply chain / partnersIn-house or supply chain
  1. 1

    Pendant design & tooling

    Qinxi in-houseZinc & Aluminum Alloy Die Casting

    Qinxi owns the 3D relief model and the die for the pendant shell, so this is made in-house. The image, cover and bail are specified at the enquiry stage and sourced from the supply chain.

    Quality control points

    • Relief depth and image window fit · Engineering review of the artwork and tool · Each new tool or project
  2. 2

    Zinc alloy die casting of the shell

    Qinxi in-houseZinc & Aluminum Alloy Die Casting

    The pendant shell is die cast on Qinxi's own line, de-gated and tumbled. The image window and relief edges are the visible surface, so fill and flash there are checked rather than only the back.

    Quality control points

    • Fill and porosity at the relief and window · Visual check under 600-1000 lx, 300 mm distance · First 5 pieces per cavity per shift
    • Window dimension for the image · Caliper and go/no-go gauge · First article + every 2 hours
  3. 3

    Plating and enamel / resin

    Supply chain / partners

    The shell is plated and the recess may be filled with enamel or a resin dome. Plating is outsourced to the supply chain; thickness and corrosion are verified against the agreed specification.

    Quality control points

    • Coating thickness · XRF coating thickness gauge (ISO 3497 / ASTM B568) · One set per plating colour per batch
    • Enamel / resin bubble and adhesion · 10x loupe; tape adhesion test · Per lot, AQL 2.5 (ISO 2859-1 general level II)
  4. 4

    Image insertion and assembly

    Qinxi in-house

    The image is placed in the window, the cover is sealed and the bail is attached. This final assembly is done in-house: cap and assembly are Qinxi's own process, so the pendant leaves the line complete.

    Quality control points

    • Image alignment and cover seal · Visual check under 600-1000 lx, 300 mm distance · Per lot, AQL 2.5 (ISO 2859-1 general level II)
    • Bail pull and pendant drop · Pull gauge on the bail; drop test per agreed height · One sample set per batch

Relevant compliance

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Custom shapes, finishes and logos. Email us your artwork or sample photos.

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