Mun Siong Engineering Limited is one of Singapore’s leading Construction & Integrated Maintenance solution providers, offering a range of Mechanical as well as Electrical & Instrumentation services for the Oil & Gas, Process, Petrochemical, Energy, Chemicals, Power and Pharmaceutical industries.


Founded and headquartered in Singapore since 1969, we have had over 50 years of solid experience providing turnkey solutions in engineering design, plant construction projects, and integrated maintenance of plants and their equipment. We also carry a host of exclusive products and specialised services to satisfy our clients’ unique needs, and we are equipped with the latest technologies to stay ahead of the curve, making a point of pursuing the highest standards of safety and consistency.


Mun Siong’s dedication in safety, quality and competitive solutions has earned us the reputation as a reliable and progressive company, distinguished by our sound corporate governance, commitment to business continuity and corporate social responsibility. Together with our more than 50 years of track records, long-standing business relationship and broad experience in managing service contracts, we have expanded our global footprint in Malaysia, Myanmar, Taiwan and the United States, and we are continually seeking and evaluating new opportunities world-wide.




In recognition of our unyielding dedication to safety, quality, environmental responsibility and business continuity, we are proud to be certified with the following: 


  • ISO 9001:2015 

  • ISO 14001:2015 

  • ISO 22301:2012

  • ISO 45001: 2018

  • BizSAFE Star 

  • NB Stamp (NBBI) 

  • R Stamp (NBBI) 

  • U Stamp (ASME) 

  • U2 Stamp (ASME) 

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At the heart of our company’s philosophy is the belief in continuous improvement. We maintain a high standard of technical competency by equipping our staff with the requisite industrial technical skills and safety knowledge. We have been a Certified On-the-Job Training Centre (COJTC) under the Institute of Technical Education (ITE) since 1995.

Retubing and plugging of Heat Exchanger.


Our belief remains the same since our founding time – deliver the best timely and safe competitive solutions.  We believe that credibility is the essence of every business. Thus, we strive to fulfill our clients’ requirements, while adapting ourselves in different circumstances to deliver the best at all times.

Our Vision

We will become the preferred and most trusted turnkey solution provider to customers, colleagues, investors, business partners, and the communities where we work and live.

Our Mission

We dedicate ourselves to be the preferred engineering service provider that thrives on Safety, Quality and Competitive Solutions to achieve customer satisfaction.

Our Core Values 


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To put the safety of everyone above all. 

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To strive for continuous quality improvement in all that we do.

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Customer Focus

To achieve total customer satisfaction by flawlessly delivering customer wants. 



To be a world-class leader in every aspect of our business.



To encourage cooperative efforts at every level and across all activities in our company.



Mun Siong Group's commitment to Quality, Safety, Health and Environment (QSHE) practices forms an integral part of our corporate philosophy. We are committed to take due care and interest in the environment, health and safety of our employees, customers, contractors, suppliers and the public. The mission of our SHE Department is to ensure that our Group meets and maintains the safety standards applicable to the oil and gas industry and promotes awareness of work safety to our employees. 

Quality Objectives 

Flawless Execution 

  • Achieve total customer satisfaction. 

  • Achieve zero NCR. 

  • Compliance to statutory and regulatory requirements 

Excellent Quality 

  • Achieve zero rework cases. 

On Schedule Delivery 

  • Achieve zero backlog cases. 

SHE Objectives 


  • Achieve zero incidents 


  • Identify risks that threatens the health of our employees and ensure that it is kept within acceptable level. 


  • Monitor the usage of our resources and keep wastage to a minimum. 


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Cheng Woei Fen 

Executive Chairlady

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Executive Deputy Chairman

Quek Kian Hui

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Non-Executive Lead Independent Director

David Tan Chao Hsiung

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Mah Kai Leong

Non-Executive Independent Director

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Lau Teik Soon 

Non-Executive Independent Director



ISO 9001:2015


ISO 14001:2015


ISO 45001:2018


NB Certificate

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American Society of Mechanical Engineers (ASME) "U" Certificate

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American Society of Mechanical Engineers (ASME) "U2" Certificate


Certificate of Approval as Approved Scaffold Contractor 


Certificate of Approval as Approved Crane Contractor 

bizSAFE Mun Siong Engineering

BizSAFE Level Star Certificate


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WSH Awards (Performance) 


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WSH Awards (Performance) 


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WSH Awards (Performance) 


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WSH Awards (Performance) 


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WSH Awards (Performance)