Tiong Kiat Tan

Part of Ernst & Young Global Ltd., Ernst & Young (Malaysia) is a Malaysian company that provides accounting services. The company is based in Kuala Lumpur, Malaysia.

The Association of Chartered Certified Accountants (ACCA) is a professional body for accountants. The non-profit company is based in Glasgow, UK, and has subsidiaries in Mauritius, United Kingdom, and Hong Kong. The British company offers a program called ALP-C, which approves learning materials from high-quality content providers to support studying towards ACCA's qualification. The role of the CFO is evolving beyond finance to include reporting on value-centric aspects of their operations, as companies move towards sustainable practices. The CEO of the company is Helen Joanna Brand.

Part of APM Automotive Holdings Bhd., APM Thermal Systems Sdn. Bhd. operates as an investment holding Malaysian company.

PT Eco Partners Indonesia is an investment holding Indonesian company that focuses on nature conservation park business.

Mattan Bhd is an investment holding company involved in the provision of systems integration services for the renewable energy industry. It specializes in construction, installation, subcontracting works, and operation and maintenance of renewable energy facilities. It operates through the following segments: Engineering, Procurement, Construction and Commissioning (EPCC), Operation and Maintenance, and Subcontracting and Consultancy Services. The EPCC segment offers site assessment, system designs, procurement, system installation, commissioning services as well as operation and maintenance services. The Subcontracting and Consultancy Services segment provides consultancy and advisory to end users, project planning and management services, and construction management and supervision. The Operation and Maintenance segment refers to administration, system monitoring, preventive maintenance and corrective maintenance. The company was founded on September 5, 2017 and is headquartered in Petaling Jaya, Malaysia.

Tans Ventures Sdn. Bhd. functions as an investment holding Malaysian company.

Mattan Engineering Sdn. The private company is based in Jaya, Malaysia. Bhd. provides engineering services to renewable energy projects. The Malaysian company was founded by Tiong Kiat Tan.