Management Team

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The board of Directors comprise the founding partners from Exsim Group of Companies. The Exsim Group is primarily involved in the Property Development scene in Malaysia with majority of the development centred around the Klang Valley. The low keyed approach of the company and the Directors has seen the silent growth of Pentas Flora as a leading oil recovery company in Malaysia in just a span of 5 years since its ownership.


Ng Yaw Cheng is a pioneering member of Pentas Flora having joined the company in 2012. With sound technical knowledge and engineering know how of process plant design and operation, he is also the de-facto Technical Director of the Plant Operations. Mr Ng has over 25 years of experience in oil recovery and used oil application in quarries across Malaysia.


Mr Chua is a graduate in Bachelor of Arts in Finance from the University of Hertfordshire. With over 18 years experience spanning roles in electrical and electronics industry, logistics and waste management, he has led the Pentas Flora team as the Group General Manager since 2012 and is overall responsible for all management and business operations.


A competent Scheduled Wastes Manager, Esther has served various different industries as a Sales Executive and Sales Manager. A qualified Company Secretary, Esther is currently responsible for Scheduled Wastes collection and ancillary services for Malaysia including East Malaysia. Esther is a growing expert in the field of scheduled wastes upstream services encompassing scheduled wastes collection, tank cleaning services, and emergency response and consultancy services. She is currently the Key Account Manager for several multinational companies including Toyota Service Centres nationwide.


Stella Tan is a pioneering Sales personnel with Pentas Flora. She has grown with the company bringing with her the wealth of experience with over 10 years of business administration management in a reputable business-auditing firm. At present Stella partners Esther in managing Scheduled Wastes collection and other ancillary services. Stella is also registered with the Department of Environment as a Certified Environment Professional in Scheduled Waste Management. Stella is the Key Account Manager for Waste Oils from East Malaysia as well as overall responsible for expanding the network of Pentas Flora Branches and Off Site Services across the country.

Ashley has been with Pentas Flora since 2013. A graduate from the Multimedia University, Majoring in Financial Engineering, she has over 3 years experience in banking and pharmaceutical industry before venturing into the oil recovery industry. Ashley partners Nicole in managing Product Marketing across the country. Nicole is registered with the Department of Environment as a Certified Environment Professional in Scheduled Waste Management.


Wan Rozina Wan Yusoff, Quality Manager at Pentas Flora Sdn Bhd responsible for developing and managing the overall Quality Assurance of Products to ensure good quality product. She also managing the overall Department of Environment (DOE) aspects and also managing the Integrated Management System (IMS) for Pentas Flora. She has 16 years of professional experience in the area of Management of Scheduled Waste in Recovery process in Malaysia. She is a registered Chemist with Department of Chemistry Malaysia and also a competent person for Certified Environmental Professional in Scheduled Waste Management by the Department of Environment Malaysia. Wan Rozina holds a Bachelor (Hons) Degree in Industrial Chemistry from Universiti Putra Malaysia (UPM).

Yoong Kee Sang is a Diploma Holder in Mechanical Engineering and is overall responsible for engineering and facilities at the Pentas Flora Recovery & Treatment Plant in Banting Selangor. Since 2012 he has been responsible to oversee the rapid expansion of the plant including our flagship Base Oil Re-refinery Tower Project.
He is registered with the Department of Environment as a Certified Environment Professional in Scheduled Waste Management and Scrubber Operations.

Chiau Shis Sun, Laboratory Manager at Pentas Flora Laboratory Sdn Bhd is overall responsible for the operations of the testing laboratory. He is a registered Chemist with Institut Kimia Malaysia since year 2003.
He has 15 years of working experience in ISO 17025 – accredited analytical laboratories, specializing in environment, chemicals, material and oil & gas analysis. Chiau Shis Sun holds an Honors Degree in Applied Science majoring in Industrial Chemistry from Universiti Sains Malaysia (USM).


Ms Ji, the creative brain behind all promotional and marketing collaterals used by us. With a wide range of experience and qualification, Ms Ji, a qualified Information Technology graduate has over 10 years in marketing and sales experience in particular the management of events for international brands such as Kose, Blunis and The China Press. At Pentas Flora, she heads a small creative design team that works closely with our consultants to produce corporate communication media.


Elsen Hee is the new blood to Pentas Flora management team which had granted a new set of fresh eyes to the company. He is a chartered accountant graduated from Cetified Practising Accountants (CPA) with more than 4 years experience in providing auditing and assurance services from private held to publicly traded companies including multinational corportation. He is now overseeing the accounts, finance, admin and human resources management of the company.