Welcome to SWTS Asia

It is our mission to keep your plants and vessels running
Our collective group specialises in providing engineering services, design, and consultation to various industries; from maritime to energy solutions. We are equipped with the right tools and technology, and backed by dedicated service people with a passion to perform. We are committed to building long-term relationships with customers, manufacturers and business partners.
We finish what we start and go the extra mile. We are SWTS, ON Engineers, ExionAsia, MARC, OSA Valve and Encord.
We Keep Your Plants & Vessels Running
Our Vision
To be among the preferred service providers in every market segment we operate
Our Mission
We Keep Your Plants & Vessels Running
Our Focus
Engineered Flow Control Solutions
Engineering and Repair Services & Solutions
Electrical Consultancy
Our Commitment
Adoption and harnessing the power of digital technology to complement our service offerings, continuously adding value to our customers/shareholders.
Solid Foundation: Motivated, dedicated and flexible people combined with organizational efficiency
Our Values
We
Do It
Right
We
Act
Responsibly
We
Perform with
Passion
We
Make It
Fun
Our Presence
Be among the preferred service providers in every market segment we operate
Malaysia
Singapore


China

Vietnam
Thailand

Indonesia
Our Operation Companies
SWTS Pte Ltd
Singapore
Indonesia
SWTS is an independent technical service provider, offering multi-discipline engineering and industrial products and services; from design, supply, installation and integration of OEM industrial equipment, and electrical systems, to providing maintenance, repair & overhaul (MRO) services and engineering solutions.

SWTS, formerly known as Siemens Westinghouse Technical Services, has over 50 years of experience and a long-standing reputation in the engineering industry as one of the biggest and most well-equipped workshops in Asia.

ON Engineers Pte Ltd
ON Engineers are electrical engineers with specialization in system studies, condition monitoring and switching.
We are Singapore’s largest provider of electrical licensing services from low & medium voltage licenses (up to 22kV) to high voltage installations (up to 230kV and beyond), covering various industries from hotels, office towers and shopping malls, to semiconductor, petrochemical plants and data centres.
With a large pool of in-house LEW, PE and electricians, we ensure that your electrical installation is in the best of hands and up-to-date with local regulations and best practices for energy savings and sustainability. Sites under our care are safely and reliably “ON”.
Exion Asia Pte Ltd
Singapore
China
Vietnam
Exion Asia Pte Ltd is a flow control solutions provider under the SWTS Asia group. We are an authorised agent/distributor of several reputable product brands, actively serving the local Oil & Gas refineries, marine, petrochemical, power plants and general industries. Exion Asia is also a leader in repair for valves, rotating equipment and instruments.
We have expertise to provide workshop servicing, on-site commissioning and troubleshooting across Asia together with our subsidiaries and associate companies in Malaysia, Thailand, Vietnam and China.
MARC (Thailand) Co. Ltd
MARC (Thailand) Co. Ltd. is a leading technical services company and part of SWTS Asia Pte Ltd. We specialize in providing high-quality engineering services to a range of sectors, including industrial, utility, public and energy. We offer integrated and comprehensive electrical and mechanical services, both in-shop and on-site.
Our primary focus is on providing repair and services for generators and turbines. We offer a range of services for turbines and generators, including
– on & off-line monitoring
– protection & control
– AVR and electronics governor redesign
– generator stator & rotor test, overhaul, rewind, and repair
– turbine overhaul, re-blade, parts replacement, and repair
OSA Valve Services (Thailand) Co.,Ltd
OSA Valve Services (Thailand) Co.,Ltd. is a flow control solutions provider under Exion Thailand Group and SWTS Asia Group. We aim to become a leader in flow control business focused in Oil and Gas, Petrochemical and Power Generator Industrial.
We pride ourselves as flow control specialist with our capabilities and extensive experiences in Design, Supply and Service for board range of Valves from Manual, On-Off, Safety, Control and Severe Service Valve.
Together with our associate companies in South East Asia Region. OSA Thailand endeavours to expand and develop its network of resources and strategic alliances, constantly improving our skills to meet improving technologies and growing regional economies.
Encord Sdn Bhd
Encord Sdn Bhd is a valve supply and service company under the Exion Asia Group. Over the years, Encord has been expanding steadily in the industries, with the acquisition of several established product agencies. We are making “READY TO SERVE” our special undertaking coupled with the understanding of the nature these industries operate. As suggested by our 25 years of professional service, Encord has mastered the tricks of the trade. We have consulted and worked with a multitude of industries namely Palm Oil Refineries, Palm Oil Mills, Oleochemicals, Food & Beverages, Pharmaceuticals, Steam & Thermal Oil Boiler Applications, Petrochemicals, Oil & Gas, Water Treatments, Shipyards and General Industries to successfully cater to their valve requirements.