I found about 25 of the Wang companies on Riskstorm, but can't find a way around to see the rest. There were several more pages of them (5 pages of companies minumum). Paste in chrome and translate, I provided translated screenshots.
What I've found adds up to about 130 million in capital. Add in 20 or more other companies, it could easily double that amount. Wang Dequn might not be a billionaire, but 100s of millions is good enough for me. Don't worry, he will be a billionaire soon.
$130,105,500.00
I put together a spread sheet. I believe there at least double this amount of Wang Dequn affiliated companies.
Tianyancha site shows 57 enterprise associated with Wang Dequn:
Spreadsheet showing 25 of Wang's companies and registered capital.