SiamDiSai

2 million Thai enterprises
searchable even in Chinese

Every enterprise registered with Thailand's DBD, synced in realtime. Chinese-friendly search, bulk API for diligence and KYC. Shareholder reverse-lookup, UBO traversal, change history, TSIC mapping — all in one query.

Search for free
Realtime search
live · DBD sync
⌕Bank of China3 hits · 0.18s
  • Bank of China (Thai) Public Co., Ltd.
    Bank of China (Thai) Public Co., Ltd.
    0107557000174
    BankingCapital ฿600MListed
  • Bank of China · Bangkok Branch
    Bank of China · Bangkok Branch
    0993000018571
    BankingForeign branch
  • BOC ZGC Liaison Office (Thailand)
    BOC ZGC Liaison Office (Thailand)
    0993000218034
    Representative officeNon-profit registration
Illustrative — actual results include shareholders, capital, change history (14 fields total).

Coverage & freshness

Data from Thailand DBD public registrations + daily increments. New companies indexed within 24h, shareholder changes synced.

2.18M
enterprises searchable
Full DBD coverage
~3K
new daily syncs
indexed within 24h
14
fields per response
shareholders / UBO / history
3
languages aliased
ZH / EN / TH
Group A

Basic registration

  • Registration number
  • Thai name
  • English name
  • Chinese alias
  • Registered capital
  • Registration date
  • Registered address
  • TSIC industry
Group B

Shareholders & traversal

  • Direct shareholder list
  • Shareholding %
  • UBO
  • Shareholder nationality
  • Change history
  • Related entities

When to use it

Use 01

Cross-border KYC

Banks / law firms / intermediaries verify Thai customer identity, shareholder nationality and capital thresholds before onboarding.

Typical question
"Is this 'Jin He Trading' in Bangkok the same one fined by regulators last year?"
Use 02

Investment diligence

Before investing in Thailand, batch-scan target shareholder networks to spot hidden related parties, suspicious change history or inflated capital.

Typical question
"5 JV candidates — whose shareholder background is cleanest?"
Use 03

Industry research

Filter by TSIC + geography + capital to profile Thai sub-markets, new-entrant trends and competitive landscape.

Typical question
"How many new battery plants were registered in EEC in the past 12 months? Median capital?"
Use 04

Contract verification

Before signing, verify the counterparty is active, the legal representative is current, and there are no flagged statuses — avoid shell-company traps.

Typical question
"The company we sign with today — did its director change at the start of the month?"

Search in Chinese too
companies registered in Thai

Thailand's official DBD portal only supports Thai / English. We built trilingual alias mapping for 2M companies — Chinese transliterations, industry keywords, brand aliases all hit. No more Google Translate copy-paste for Chinese legal, cross-border investors, KYC teams.

ZH → TH → EN matched in one hit
  • 中国银行
    →
    ธนาคารแห่งประเทศจีน
    Bank of China (Thai)
  • 正大集团
    →
    เครือเจริญโภคภัณฑ์
    Charoen Pokphand Group (CP)
  • 泰华农民银行
    →
    ธนาคารกสิกรไทย
    Kasikornbank · KBank
  • 电池厂
    →
    โรงงานแบตเตอรี่
    Battery Manufacturing
  • 曼谷医院
    →
    โรงพยาบาลกรุงเทพ
    Bangkok Hospital · BDMS

5 frequently asked questions

Q01

Is the data sourced legally?

All basic registration data comes from public DBD disclosures under the 2008 Business Registration Act — anyone can query. We index, clean, map across languages and expose as APIs; we never integrate unauthorized data.

Q02

How fresh is the data? Will I see deregistered companies?

~3K daily incremental syncs; new companies indexed within 24h; deregistered / revoked / suspended states tagged in realtime. Every record carries `last_synced_at`.

Q03

How accurate is Chinese search?

Across 2M companies, active Chinese hit rate is >92% (entities with high profile / Chinese-press coverage). The long tail without a Chinese name falls back to Thai / English fuzzy matching + pinyin transliteration.

Q04

How many UBO layers do you traverse?

Default 3-layer shareholder traversal; configurable deeper. Based on DBD public data + our related-entity graph. DBD does not mandate ultimate-natural-person disclosure, so UBO is the "known best estimate", not absolute.

Q05

Can I look up all companies an individual is listed in?

Yes — provide a Thai ID number / name / known company, and reverse-lookup all roles (shareholder / director / legal rep) tied to that person in DBD. API: `POST /v1/persons/lookup`.