Ir CHUNG has over three decades experience in green building and sustainable design. Colin is the Fellow Member of HK Institute of Engineers (HKIE) and many other local and international professional institutions. Ir CHUNG is the Past President of Hong Kong Association of Energy Engineers, Immediate Past President of Association of Energy Engineers – Hong Kong Chapter, Past Chairman of Association of Consulting Engineers HK, Energy Institute – HK Branch, Gas and Energy division and Energy Discipline Advisory Panel of HKIE.

Colin was the Elected Director from IMG of HKGBC from 2014 to 2019 and also served as the Chairman of Green Labelling Committee of HKGBC from 2017 to 2019.

He was elected as the Director of BEAM Society Limited (BSL) since June 2016 and appointed as the Chairperson of Technical Review Committee since February 2017. Currently, he is serving as the Chairperson, Member of Standard Sub-Committee, 2nd Vice Chairperson of Development Sub-Committee, Member of Remuneration Committee, Member of IA Taskforce, Member of F&B Steering Committee and Member of BEAM Plus Existing Schools Version 2.0 - Jockey Club Energy Saver in Schools Project (JCES) Steering Committee.