Kwee Lung Sin
@p031603
Indonesia, Semarang
Joined Apr 2016
World Rank: #1123 (24.7 points)
Institution: SMAKARANGTURI SEMARANG
Activity over the last year
Effectiveness
- Problems solved
- 28
- Solutions submitted
- 223
Indonesia, Semarang
Joined Apr 2016
World Rank: #1123 (24.7 points)
Institution: SMAKARANGTURI SEMARANG