Ranking Year:
# | Company Name | Region | Tech Topics | Total |
|---|
1 |  | Coal mining,Mining engineering,Natural resource management | Patent: 2 | |
2 | | Coal,Mining engineering,Natural resource management, ...[+1] | Patent: 1 | |
3 | | Patent: 1 | ||
4 | | Electronics,Electricity | Patent: 1 | |
5 | | Curtain wall | Patent: 1 | |
6 | | Patent: 1 | ||
7 |  | Pinyin,Materials science,Chemistry, ...[+2] | Patent: 1 | |
8 | | Patent: 1 | ||
9 |  | Manufacturing engineering,Energy management,Coal, ...[+2] | Patent: 1 | |
10 |  | Patent: 1 |