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Toll-free  :  0800-88-55-88
Toll-free
0800-88-55-88

Thailand Private Investigation from Taiwan

UNION Private Investigation Inc. has set the standard in the industry with our proven methods and results. Our private investigators have the expertise needed, having solved thousands of cases for our clients.

We understand the need to maintain a solid infrastructure capable of critical incident response. We offer our clients the benefit of a large firm with the level of service of a small owner operated agency.

We are committed to our clients and understand the need to employ professional investigators that possess a wide range of skills and adhere to the highest ethical standards.

Confidentiality, Integrity and Professionalism, fundamental principles that demonstrate the business culture at UNION Private Detective Agency.

We leave no stone unturned when we take you on as a client. We understand each client presents us with unique situations and no two cases are the same.

Integrating skill sets in photography, Information Technology and Private Investigation, we can provide our clients with specialized services and solutions resulting in high quality investigations producing the best possible outcomes.

We will gather the evidence needed to solve your case. With thousands of satisfied clients, we are the private eyes to count on for help.

For more than 30 years, UNION Private Detective Agency has offered the most elevated quality to individuals, lawyers and businesses in our community. Our services range from Background Checks, Surveillance and much more to help you resolve your circumstance, whether it’s an unfaithful spouse, a missing individual or extortion.

Our native private investigators perform tailor-made services for you in the Capital Bangkok, Chiang Mai, Nakhon Ratchasima and Hat Yai of Thailand.


Services we offered

  • Executive & Key Staff Profiles
  • Adultery Investigation
  • Missing people locating
  • Due Diligence Analysis
  • Intellectual Property Security
  • Insurance investigation
  • Trademark Infringements
  • Brand Protection
  • Copyright Violation
  • Licensing & Franchise Violations
  • Unfair Competition Practices
  • Debugging Sweep
  • Pre-Transaction Intelligence
  • Misrepresentations
  • Corporate Intelligence
  • Pre-Merger / Pre-Acquisition Investigations
  • Criminal, civil, and domestic investigations
  • Witness Location / Litigation Support
  • Witness Interviews and Statements
  • Witness Investigations and Evaluations

Our Private Detectives Are Cautiously.

Contact us today to schedule an appointment.

No Matter how large or small your situation is, we have the skills to help.