- Kai Shing Opal Co.
- Jewellery,Opal,Opal jewelry,Doublet,Triplet,jewelry,Synthetic Opal,Gemstone.
- Address:9A Ka Fat Bldg. , 24 Carnarvon Road. , TST,
- Lapkin Jewelry Factory
- Synthetic Opal, Opal Mosaic Doublet, Triplet,Semi-Precious Stones,Synthetic Stones.
- Address:Wing Hong Street
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