Top 5 Trusted Detective Agencies in Hai Duong

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Ngày cập nhật gần nhất: 15/4/2026

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1. Phuc Tam Detective Agency

2. Viet Duc Detective Agency

3. Hoang Long Detective Agency

4. Toan Tam Detective Agency

5. Linh Ha Detective Agency

1. Phuc Tam Detective Agency

Phuc Tam Detective Agency is one of the oldest detective agencies in Vietnam. The company's Hai Duong branch is highly praised by clients for its professionalism. Phuc Tam helps individuals and businesses in the area prevent economic and mental harm caused by various societal issues.

Why do so many customers in Hai Duong trust Phuc Tam?

Confidentiality: We guarantee complete confidentiality of clients' personal information and investigation details throughout the process.
Accuracy: All results are 100% accurate, thoroughly verified before being reported to clients.
Effectiveness: Phuc Tam ensures complete resolution of clients' issues through expert detective work.
Affordable costs: Services start from 800,000 VND per day, providing value for money.
Professional team: Our management includes retired police officers and experienced lawyers. Detectives are carefully selected, familiar with local areas, and have excellent networks for gathering information.
Free 24/7 consultation: Clients can contact us at any time via hotline or Zalo for free consultation, even on holidays and weekends.
Modern technology: Phuc Tam uses advanced surveillance technologies, including tracking, monitoring, GPS, eavesdropping, and mini cameras.
No double-dealing: We stand against detectives who sell out or blackmail clients, as it damages both the client's reputation and Phuc Tam's integrity.
Diverse services: Phuc Tam offers nearly 20 different detective services to meet all clients' needs.
Trusted by many: Most of Phuc Tam's clients come through referrals from family and friends who have previously used our services.

Phuc Tam provides the best detective services in the following areas:

2 cities: Chi Linh, Hai Duong.
Districts: Gia Loc, Cam Giang, Binh Giang, Kinh Mon, Kim Thanh, Thanh Ha, Nam Sach, Ninh Giang, Thanh Mien, Tu Ky.

CONTACT DETAILS:

Head office: 66 Tran Hung Dao, Hoan Kiem, Hanoi.

Branch office: 172 Yen Lang, Dong Da, Hanoi.

Hoang Mai office: 143 Nguyen Chinh, Hoang Mai, Hanoi.

24/7 Hotline: 0978.4363

Email: [email protected]

Website: https://thamtuphuctam.com

Phuc Tam Detective Agency

2. Viet Duc Detective Agency

Viet Duc Detective Agency is one of the first private detective services in Hai Duong, starting its operations in 2010. The agency is available for investigation services even on holidays and special occasions. Over the years, Viet Duc has consistently met client demands, excelling in cases involving evidence collection and verifying extramarital relationships (such as infidelity issues). The agency's main advantage lies in its scientific and efficient approach, delivering accurate results in the shortest time at reasonable costs, making it accessible to a wide range of clients.

The agency is run by a team of highly experienced professionals who have handled thousands of cases across Vietnam.

Why should you choose Viet Duc Detective Agency?

When Viet Duc accepts a client's case, their staff is committed to providing the best service and will go to great lengths to resolve any issues. In cases where new complications arise, the agency strives to find solutions within its capabilities and will consult the client for further steps.
Viet Duc offers free consultations with experts who have vast experience in handling complex cases that other agencies may struggle with. They will provide clients with effective solutions and guidance.
The agency guarantees quick and accurate information delivery, either through the internet or phone, ensuring all data provided is objective, secure, and precise.

CONTACT DETAILS:

Hotline: 094.1111335

Website: https://thamtugioi.com/

Illustrative image (Source: Internet)

3. Hoang Long Detective Agency

Hoang Long Detective Agency is one of the top 3 established and licensed detective firms in Vietnam, specializing in information services. With a team composed of lawyers, psychological experts, security officers, and trained investigators, Hoang Long excels in basic investigative techniques.

Hoang Long's strengths lie in offering services such as infidelity investigations, child monitoring, and financial investigations. With over 10 years of experience, serving more than 4,000 individual and corporate clients, the agency has earned high trust and positive feedback regarding service quality, reputation, confidentiality, and affordability.

Hoang Long Detective Agency operates across 64 provinces and cities, including Hanoi, Ho Chi Minh City, Da Nang, Binh Duong, Dong Nai, Thai Nguyen, and many more.

Its detective offices in Ho Chi Minh City and Hanoi are officially licensed by the Department of Planning and Investment and are protected by DMCA copyright laws. The main office is located at 82 Kinh Duong Vuong, District 6, Ho Chi Minh City.

With the motto Reputation – Dedication – Responsibility – Confidentiality, Hoang Long continues to strive to meet all client needs.

The primary services provided by Hoang Long include: infidelity investigations, phone number verification, technology-related services, Facebook and Zalo monitoring, child supervision, identity verification, DNA sample collection, pre-marriage investigations, address verification, counterfeit goods detection, and more.

Over 10 years of experience in the field.
Our team consists of lawyers, psychological experts, and security officers professionally trained in investigative techniques.
All detectives have clean records and no criminal history.
More than 4,000 satisfied clients, with partnerships with major corporations.
Absolute confidentiality guaranteed.
All transactions are accompanied by clear and transparent contracts.
Refunds for inaccurate results, free consultations before, during, and after investigations.
Offices and headquarters are located in major cities across Vietnam.
Services available in 64 provinces and cities.

The detective profession provides value through the truths uncovered. However, not all truths are as expected. Hoang Long Detective Agency is your partner in managing these truths, ensuring they meet the three pillars: REPUTATION – PROFESSIONALISM – CONFIDENTIALITY.

CONTACT INFORMATION:

Ho Chi Minh City:

Branch 1: 82 Kinh Duong Vuong, District 6, Ho Chi Minh City
Branch 2: 165/10 Tay Thanh Street, Tan Phu District, Ho Chi Minh City

Hanoi:

Branch 1: 2nd Floor, 8 Ngo 50, Nguy Nhu Kom Tum Street, Thanh Xuan, Hanoi
Branch 2: 126 Khuat Duy Tien Street, Hanoi
Branch 3: 850 Lang Street, Hanoi

Da Nang: 122 2nd September Street, Binh Thuan, Hai Chau, Da Nang, Vietnam

Nghệ An: 16 Thang Long Street, Nghi Kim, Vinh City, Nghe An, Vietnam

Nha Trang: Vo Cang, Nha Trang City, Khanh Hoa, Vietnam

Da Lat: 111 Yersin, Ward 10, Da Lat City, Lam Dong, Vietnam

National Hotline: 0948 363 080

Website: thamtutuhoanglong.com

Facebook: https://www.facebook.com/thamtuhl/

Image for illustration purposes (Source: Internet)

4. Toan Tam Detective Agency

Many people who hire private investigator services to search for information on infidelity, locate missing family members, or find relatives who have disappeared often feel uncertain about their decision. They wonder if the service they are hiring is trustworthy and if the money they are paying is worth the information provided. But this no longer has to be a headache or a dilemma once you reach out to Toan Tam Detective Agency, the first recommendation from Mytour in the list of private detective companies in Hai Duong.

Illustrative image (Source: Internet)

5. Linh Ha Detective Agency

Among the trusted detective agencies in Hai Duong, Linh Ha Detective Agency stands out as one of the top names that Mytour highlights today. When you choose Linh Ha Detective Agency, any doubts or personal issues you may have will be resolved swiftly, accurately, and efficiently, with guaranteed confidentiality. This is made possible by a team of professional, experienced private investigators, equipped with the latest surveillance technology. Furthermore, Linh Ha Detective Agency offers affordable rates for private detective services in Hai Duong. The agency provides a wide range of services including: - Infidelity investigation and surveillance - Gathering information and collecting evidence - People search services - Identity and background verification - Bodyguard and security services - Phone tracking - Call logs and message retrieval - Bank account statement services The agency's commitment includes: - 100% confidentiality for all clients - 24/7 availability, including holidays and weekends - A dedicated, highly professional team with comprehensive and accurate reports - Use of the latest and most advanced technology for optimal results - Competitive and reasonable pricing - Security, professionalism, and objectivity as the core values All staff and leadership at Linh Ha Detective Agency are committed to understanding and addressing the concerns of their clients, ensuring efficient, fast, and objective investigations. Every piece of information is handled with complete confidentiality, saving clients both time and money.

Illustrative image (Source: Internet)

Frequently Asked Questions

Why should I trust Phuc Tam Detective Agency in Hai Duong?

Phuc Tam Detective Agency is known for its professionalism, confidentiality, and accuracy. Their expert team includes retired police officers and experienced lawyers, ensuring complete resolution of clients' issues through modern surveillance technologies.

What are the services offered by Viet Duc Detective Agency?

Viet Duc Detective Agency specializes in evidence collection, verifying extramarital relationships, and providing expert consultations. They offer quick, accurate information delivery with a scientific approach, making it accessible and reliable for a wide range of clients.

What makes Hoang Long Detective Agency a trusted choice in Vietnam?

Hoang Long Detective Agency stands out with over 10 years of experience, serving 4,000+ clients. They offer services like infidelity investigations, child monitoring, and financial investigations, with a commitment to confidentiality, professionalism, and reputation.

What is the cost of hiring a detective from Phuc Tam Detective Agency?

Phuc Tam Detective Agency offers competitive pricing, with services starting at 800,000 VND per day. This provides excellent value for money while maintaining high standards of confidentiality and effectiveness in investigations.

How can I contact Linh Ha Detective Agency for private investigation services?

Linh Ha Detective Agency can be contacted via their hotline or website. They offer 24/7 availability, even on holidays, and specialize in infidelity investigations, background verification, and more, using the latest surveillance technology.

What types of investigations does Toan Tam Detective Agency specialize in?

Toan Tam Detective Agency is known for handling cases like infidelity investigations, missing person searches, and family reunifications. Their professional team ensures accuracy, confidentiality, and quick resolution, making them a reliable choice for private investigations.

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