2015 Certificate of merit by Chairman of Congress
Silver-Tower Industry Prize by president Geun Hye Park (Contribution to industry development)
Hall of Fame of Global Institute for Transferring Skills
2014 Honorary Doctor of Engineering at Korea University of Technology and Education
2009 Master of watch in Korea
1993 Diploma of Technology Education at Vacheron Constantin Swiss (Geneva)
1986 Diploma of Technology Education at Piaget Swiss (Geneva)
1989 ~ 1994 President of Korean Watch Technology Association
1975 Silver-Tower Industry Prize by president Jeong Hee Park (Enhancement of national prestige and contribution to industry development)
Gold Medal in watch division at the 22nd World Skills Madrid
1974 Gold Medal in watch division at the National Skill Competition
1973 Gold Medal in watch division at the Gyeonggi-Incheon Skill Competition
2015
Silver-Tower Industry Prize
2015
Dinner for winning World Skills
1973
Gold Medal at the Gyeonggi-Incheon Skill Competition

1974
Gold Medal at the National Skill Competition

1975
Gold Medal at the 22nd World Skills Madrid
(First and only gold medal in Asia as of 2016)
1975
Bronze -Tower Industry Prize
August 1986
Diploma of Technology Education at Piaget Swiss Headquarter
April 1993
Diploma of Technology Education at Vacheron Constantin Swiss Headquarter
April 1973
1st place in watch division at the Gyeonggi-Incheon Skill Competition
September 1974
1st place in watch division at the National Skill Competition
September 25th, 1975
President Jeong Hee Park awarding Silver-Tower Industry Prize to Chang Mook Choi and giving his words for the gratitude for enhancement of national prestige
September 25th, 1975
Chang Mook Choi being awarded Gold Medal from King Carlos of Spain (Middle of the picture)
April 1993
Together with the top watch technician at Vacheron Constantin
April 1993
Chang Mook at the 3rd of the picture together with the watch technology education manager at Vacheron Constantin of Swiss Geneva
1986
Watch master Chang Mook Choi in front of the Piaget Swiss Headquarter
1991
Watch master Chang Mook Choi in front of the Piaget Swiss Headquarter
1989
Watch master Chang Mook Choi in front of the Patek Philippe Swiss Geneva Headquarter
September 1975
During the participation of World Skills Madrid
August 1986
Together with the president Yves G. Piaget after the technology education of Piaget
August 1986
Watch Master Chang Mook Choi together with the watch technology education manager at Piaget
October 1987
Examiner of watch division of National Skills Competition
2001 today
12 times examiner of watch division of National Skills Competition for 12 years
September 2009
Minister of Labor Yeong Hee Lee / Chief Director of Human Resources Development Service of Korea Jae Seob You / Center Watch master Chang Mook Choi