“国际非开挖技术协会” 于2010年在新加坡举行的 “国际非开挖技术” 会议上宣布新一届的理事会成员，“百莱玛集团” 执行董事兼 “百莱玛设备有限公司” 董事总经理蔡翰霆先生获选为 “国际非开挖技术协会” 副会长。
蔡先生是 “中国香港非开挖技术协会” 的创会会员，多年来获委任为协会的理事会成员，曾任 “中国Mr. Derek Choi, the Executive Director of the Group, was appointed as the Vice-Chairman of “International Society for Trenchless Technology”.
“International Society for Trenchless Technology” (ISTT) announced its new board of directors in No Dig Singapore 2010. Mr. Derek Choi, the Executive Director of the Group, was appointed as the Vice-Chairman of ISTT.香港非开挖技术协会” 会长、行政秘书长、国际代表，在推动中国及香港非开挖行业发展上不遗余力，贡献良多。蔡先生现获选为 “国际非开挖技术协会” 副会长，继续致力于推动全球非开挖技术与行业的发展。
“国际非开挖技术协会” (ISTT)成立于1986年，宗旨为透过教育、培训、交流和研究，推广非开挖技术的应用和发展。“国际非开挖技术协会” 鼓励世界各地成立 ‘非开挖技术协会’，为共同的目标而努力。现于六大洲上有超过20个会员国，每个会员国可委任代表加入 “国际非开挖技术协会” 的理事会。现任协会会长为艾森穆博士（Dr. Samuel Ariaratnam），副会长蔡翰霆先生，John Hemphill先生为行政秘书长，Kyoko Kondo女士为协会会员秘书。
Mr. Choi is the founding member of “China Hong Kong Society for Trenchless Technology”. He is the Director of the board and has been the Chairman, Executive Secretary, International Representative for the Society. Mr. Choi has greatly contributed in the development of trenchless techonology in China and Hong Kong. Mr. Choi is appointed as the Vice-Chairman of ISTT and will continue to promote the global development of trenchless technology.
ISTT was established in 1986 with objectives to advance the science and practice of trenchless technology for the public benefit, and to promote education, training, study and research in that science and practice. ISTT encourages the formation and affiliation of societies sharing its objectives worldwide. There are now more than 20 such affiliated societies in 6 continents. Each is entitled to nominate a Director on the ISTT Board. Dr. Samuel Ariaratnam is now the Chairman, Mr. Derek Choi is the Vice-Chairman, Mr. John Hemphill is the Executive Director and Ms. Kyoko Kondo is the Membership Secretary.