# koyama co.,ltd.

> Reevol Source machine-readable supplier card. Profile URL: https://source.reevol.com/en/suppliers/koyama/. Locale: en.

## Identity
- Legal name (en): koyama co.,ltd.
- Business type: manufacturer
- Location: Tokyo, Tokyo, Japan

## Industry
- Primary: Fine Jewellery
- Sub-industries: Fine Jewellery, Jewellery & Watch
- HS codes: 7113, 7118, 9101
- Export markets: Hong Kong, Japan

## Certifications
- ダイヤモンドネックレス - — source: atlas [reevol_observed]

## Digital footprint
- Visibility score (0-100): 0

## Summary
What we know: Manufacturer based in Tokyo, Japan (verified by country and city) Specializes in fine jewellery, including precious metal items and watch components (based on HS codes 7113, 7118, 9101) Exports to Hong Kong and Japan (per export markets)

What the data suggests: Company has some international reach, given Hong Kong export presence (suggested by export markets) Focus on high-value jewellery production, indicated by HS codes covering precious metals and watch movements (based on HS codes)

Not yet verified: Website, Trade fairs, Production capacity.

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## Provenance
- Last enriched: 2026-03-24T05:56:44.270Z
- AI content last generated: 2026-05-20T22:51:40.699Z
- Source: Reevol Source (https://source.reevol.com). Underlying data from Reevol, sourced from public business registries, trade-fair exhibitor lists, certification bodies, and digital footprint.
- License: see https://source.reevol.com/en/methodology/