Offices and Management Team
Offices Workshops

Dieselman Marine Service Shanghai

As headquarters of Dieselman Group, located in Shanghai, China, covers worldwide technical services for Marine Diesel Engines

Tel: +86 21 5899 5529


Slater CHEN - Service Manager, team 1

JianLin WANG - Service Manager, team 2

Dieselman Marine Service Korea

Located in Busan, Korea, covers technical services and sales in Korea and Japan.

Tel: +82 51 961 5529


ChilKyu Kwon - General Manager

Dieselman Marine Service Singapore

Tuas, Singapore, covers technical services and sales in Singapore and Southeast Asia.

Tel: +65 6517 9728


Jun LI - General Manager

Logan PAN

Managing Director

- Dieselman Group

Founded Dieselman Marine Service in 2017

8 years in MAN, Ex Head of Technical Service of MAN China

Ex General Manager of Goltens China

Chief Engineer

Totally 30+ years of experience in marine industry

Slater CHEN

Service Director

- Dieselman Marine Service Shanghai

Joined Diselman Marine Service in Nov 2017

Ex Service Manager, 4 years at MAN PrimeServ China

Ex Service Coordinator in Wartsila and Hamworthy China

Marine Engineer

Totally 20+ years of experience in marine industry

JianLin WANG

Service Director

- Dieselman Marine Service Shanghai

Joined Dieselman Marine Service in Jun 2020

Ex Service Manager, 8 years at MAN PrimeServ China

Ex Superintendent, 3 years at AMP and 4 years at BSM

Chief Engineer

Totally 30+ years of experience in marine industry

Jun LI

General Manager

- Dieselman Marine Service Singapore

Joined Diselman Marine Service in Nov 2020

Ex Service Manager, Superintendent Engineer, 5 years in MAN China

Ex Engineer, 6 years in Engine Builder

Totally 15 years of experience in marine industry

ChilKyu KWON

General Manager

- Diselman Marine Service Korea

Joined Dieselman Marine Service in Mar 2020

Ex Superintendent Engineer, Head of Technical Service, 13 years in MAN Korea

Ex Commissioning Engineer, 1 year for local Egniner Builder

Marine Engineer

Totally 20+ years of experience in marine industry

Ben GU

General Manager

- 4D MarineTech

Joined Dieselman in Jun 2019

Ex Head of BWTS/EGC Retrofit, 4 years in a local company

Ex Designing Engineer, 8 years in a New Building Shipyard

Ex Machinery Supervisor, 2 years in a New Building Shipyard

Totally 25+ years of experience in marine industry

4D MarineTech (Shanghai)

In Shanghai, China, provides consultancy, engineering service and turn-key solutions on Marine Decarbonization for worldwide shipping companies.

Tel: +86 21 5899 5529


Ben GU - General Manager

Management Team

Dieselman Group, headquartered in Shanghai, together with Dieselman Marine Service Shanghai and 4D MarineTech, and two overseas offices in Busan, Korea: Dieselman Marine Service Korea, and in Tuas South, Singapore: Dieselman Marine Service Singapore.

Dieselman Group

Dieselman Group: Your Trusted Partners in Maritime Excellence.

Dieselman Group stands as the epitome of excellence, specializing in two key areas: Dieselman Marine Service, providing top-class Technical Service for Marine Diesel Engines, and 4D MarineTech, focusing on Consultation and Engineering for Marine Eco and Decarbonization.

Marine Diesel Engine Expertise:

Dieselman Marine Service boasts dedicated teams in Shanghai, Korea, and Singapore, recognized industry leaders in Marine Diesel Engine services. Focused on quality, efficiency, and 24/7 availability, we deliver tailor-made solutions derived from our extensive technical knowledge and experience.

Pioneer in Marine Decarbonization:

Through 4D MarineTech, we lead the charge in Retrofit Solutions and Engineering for Marine Decarbonization. Our commitment to environmental stewardship is evident in our innovative approaches and cutting-edge solutions, setting new standards in sustainability.

Uncompromising Quality: At Dieselman, only the best is acceptable. We provide high-level services characterized by unmatched quality, precision, and reliability. Every task we undertake is executed with the utmost care and attention to detail.

Expert Dedication: We are more than just a service provider; we are a team of dedicated experts passionate about Marine Diesel Engines. Our specialized focus ensures in-depth knowledge and superior solutions tailored to your needs.

Transparent Professionalism: Transparency is our hallmark. We believe in clear communication, openness, and honesty in every interaction. Our clients can trust us to provide straightforward, professional guidance, ensuring complete peace of mind.

Trustworthiness: Trust forms the foundation of our relationships. We prioritize your confidence in us, ensuring that our services are not only reliable but also trustworthy. Your satisfaction and peace of mind are our ultimate goals.

Cost-Effective: Excellence doesn't have to come at a high price. We offer cost-effective solutions without compromising the quality of our services. Our commitment is to deliver exceptional value for your investment.

Tailor-made Solutions: Every client is unique, and so are our solutions. We customize our services to meet your specific needs, ensuring precise and effective outcomes.

24/7 Service: Emergencies can strike anytime. That's why we offer round-the-clock support, ensuring you have a reliable partner whenever you need us.

Our Reputation and Vision:

Since our founding in June 2017, Dieselman has earned an outstanding reputation in the global marine market. Our dedication to excellence has made us the preferred service partner for worldwide shipping companies.

Our vision goes beyond being a service provider, we aim to be your trusted ally, navigating the complexities of the maritime industry together. Choose Dieselman for a future of seamless operations, superior performance, and environmental responsibility.

Excellence in Every Service, Partnership in Every Voyage – Stay with Dieselman, where your journey is not just secure, but exceptional.

Our business philosophy

·        Customer-Oriented: Placing the customer at the center of our business operations, ensuring their needs and satisfaction are top priorities.

·        Fairness, Justice, Openness, and Transparency: Adhering to ethical business practices, fairness, and transparency in all dealings.

·        Embracing Change and Innovation: Being open to change, adaptability, and continuously seeking ways to improve and innovate our products and services.

·        Long-term Success Over Short-term Gains: Focusing on long-term success and sustainability rather than pursuing short-term profits.

·        Delivering Value and Assistance: Providing value to customers, offering assistance, and taking care of their needs and concerns.

·        Pursuit of Excellence and Uniqueness: Striving for excellence and uniqueness in our products, services, and processes.

·        Peace, Friendship, and Mutual Respect: Valuing peace, fostering friendship, and promoting mutual respect in all business relationships.

·        Environmental and Social Responsibility: Showing concern for the environment and the well-being of society, incorporating eco-friendly practices and supporting community initiatives.

·        Employee Happiness: Recognizing that happy employees lead to happy customers, emphasizing the well-being and job satisfaction of our staff.

·        Quality Focus: Prioritizing quality over quantity, emphasizing the importance of delivering high-quality products or services to our customers.

This philosophy underscores a commitment to ethical practices, customer satisfaction, innovation, and social responsibility, creating a strong foundation for your business operations.

Our core competitiveness

·        Highly Motivated Strong Team: A team that is deeply motivated and dedicated to achieving a common goal, fostering a collaborative and productive work environment.

·        Visionary Trustworthy Leadership: Leadership that is visionary, trustworthy, and capable of guiding the entire team towards a bright and successful future.

·        Well-Organized Structure: An organizational structure that is streamlined, nimble, and fast, ensuring accessibility and supportiveness to meet the dynamic needs of the business.

·        Smart Computerized Management System: Implementation of a smart computerized management system that enhances efficiency and reliability in various aspects of operations.

·        Standardized Procedures: Adherence to standardized procedures that guarantee exceptional service quality, promoting consistency and excellence in every service provided.

·        Integrated Technical Database: Utilization of an integrated technical database that facilitates professional accomplishments, providing a comprehensive knowledge base for informed decision-making.

·        Systematic Training-Learning Mechanism: Establishment of a systematic training and learning mechanism that drives continuous growth and self-evolution among employees, ensuring they stay updated with the latest skills and knowledge.

·        Fair, Just, and Open Principles: Embracing principles of fairness, justice, and openness in all business dealings, cultivating loyal and faithful partnerships that endure over the long term.

These core competencies form the foundation of our success, enabling us to deliver exceptional services, foster strong relationships, and adapt to the ever-changing demands of the market.


One Group:

Dieselman Marine Service Group, with headquarters in Shanghai

Dieselman Marine Service Shanghai

Deiselman Marine Service Busan

Dieselman Marine Service Singapore

4D MarineTech

Three Locations:

Shanghai, China + Busan, Korea + Singapore

Two business categories:   

Technical service on Marine Diesel Engines

Engineering for marine Eco and Decarbonization retrofit

Frequent Customers
most of the best and biggest shipping companies in the world
Projects Done
for Marine Diesel Engines and Green Retrofit Engineering
Customer Satisfactory
in last 6 years
Covers majority of Asia
Shanghai, Busan and Singapore