
Musin Dumanai Maratovich was born in Kanay village of Ulan district. He started his career in 1984 as a physical education teacher, then engaged in private entrepreneurship, since 2004 in the civil service.
In 1990-2004, Dumanai Maratovich created commercial structures and created new jobs. At his own expense, he built several houses in the village of Borsak, built a stable for keeping cattle, improved the village, and repaired the Kanai school. He was the first in the district to support the campaign "Tugan zherge tagzym" and made a significant contribution to the improvement of the village, as well as the organizer of the construction of a central mosque for 450 seats in the village of Kasym Kaisenov. This campaign involved businessmen and entrepreneurs from the district, as a result of which lighting, landscaping of the village were carried out, and a fountain was built in the district.
D. M. Musin also takes an active part in the sports life of the region. He is the president of the Federation of hand-to-hand wrestling and kettlebell lifting of East Kazakhstan region, judge of the highest national level in hand-to-hand wrestling and kettlebell lifting, judge of the international class in hand-to-hand wrestling, candidate of the master of sports of the USSR in judo, has the 1st category in boxing and kettlebell lifting. He is actively engaged in public work in the education of young people, involving teenagers in sports.
Provides moral and material assistance to athletes and sports organizations in conducting sports competitions. In 2009, his trainer won the title of world champion in hand-to-hand combat.
D. Musin doctor of technical sciences, author of scientific articles, co-author of educational manuals. This academic title was awarded in 2004 by the decision of the Academic Council of the Moscow International Academy of Sciences and arts.
On April 21, 2014, by the decision of the XXIV session of the Ulan district maslikhat of the V convocation No. 185, he was awarded the title of "honorary citizen of Ulan district".