Er. Ong Leng Kak
Chief Executive Officer

Er Ong is a Licensed Professional Engineer as well as ASEAN Chartered Professional Engineer.  He was also a registered Green Mark Manager with Building and Construction Authority of Singapore, as well as a Licensed Electrical Worker.

Er Ong is currently CEO of Acaltronic Private Limited. Prior to this, he was Director of RCS Engineering Pte Ltd, a leading data centre turnkey engineering company and Director of Squire Mech Pte Ltd, an engineering consultant. He is specialised in mission-critical projects like data centres, hospitals, airports, hotels, and industrial plants and sports facilities.  Some of iconic projects that he was involved are Singapore Sports Hub, Singapore Changi Airport, Starhub Mediahub, Orchard Ion Shopping Centre and St Regis Singapore Hotel.

Mr Ong graduated from National University of Singapore with an honours degree in Electrical Engineering, and holds a Master in Business Administration from the same university.  He also sit as committee member in PPE Examination Committee of Professional Engineers Board, Singapore and committee member in Board of Examiners for Specialized Diploma in Construction Management, BCA Academy.

He was also a green advocate.  He had successfully implemented many green and new ideas to reduce the carbon footprint and sustainability of developments.  He has worked closely with CDL and Daikin to successfully implement the first heat recovery from residential DX system as well as introducing easy-to-fit plumbing pipes to reduce pumping energy.   He was a committee member in Electrical Taskforce, Singapore Green Building Council.


Mr. Goh Cheng Tee, PBM

GOH CHENG TEE, our chairman graduated from Curtin University of Technology with a Bachelor degree in Commerce Property.

He has over 30 years of experiences in construction industry for a wide variety of project including Air Conditioning Mechanical Ventilation System, Cleanroom design, and related systems for commercial, industrial, hospitality and educational project.

Goh is an individual that strongly believes in fusing corporate and individual social responsibility together. He has involved in the community service in Singapore (Jurong area) for more than 10 years and was appointed as Chairman of a voluntary welfare organization Loving Heart Multi Service (Jurong)) since 2013. On the following year, he was conferred the Public Service Medal (PBM) by His Excellency, The President of The Republic of Singapore.


Mr. Darwin Wu

Darwin Wu, as president of Acaltronic Private Limited, plays a key role to set, formulate and strategize the growth of the company; not only by volume but also to bring the company to emerge in the Asia Pacific region which have developed steadily these recent years.

Darwin Wu has a strong international footprint through his past 20 years professional career paths, which strengthen his adaptability and broaden his networks. As a professional, he was an executive dealing with multinationals, public listed and global player companies that allows him to deal with multicultural, cross-industries and multi engaged projects.  

Prior to Acaltronic, Darwin Wu was with Dynacast International Ltd as a Vice President of Sales. Dynacast is a US global manufacturer of Precision High Pressure Die Casting, serving most of Fortune 500 companies over 2,000 customers worldwide. Darwin has shown an excellent track record as his sales leadership had been able to grow the sales volume despite the strong competition. Along with carrying out his roles and responsibilities in Asia Pacific, he had worked and collaborated closely with the Europe and North America regions for cross-territory potentials and solutions.

Darwin Wu was a Senior Director of ASUS, a Fortune 500 Taiwan multinational computer hardware and electronics manufacturer, listed in Taiwan and London Stock Exchange. Within his 15 years tenure in the company, Darwin devoted to set up, build, develop and manage ASUS business in South East Asia region. He hailed a milestone to bring ASUS business into South East Asia in 2000. From there, Darwin’s proven track record was followed by achieving dominant product-by-product market share, more than 75% market share for motherboard sales volume, and rapid improvement of ASUS brand image in the region. 

Darwin speaks several languages and dialects fluently (English, Mandarin, Cantonese, Fujian, Indonesian and Malay) and earned his MBA from National University of Singapore, as well as a B.Sc. in Bio-Industrial Mechatronics Engineering from National Taiwan University.