Chinese stocks - German listing

There are a number of stocks from Chinese originated enterprises being primary listed on German stock markets, usually on Frankfurt stock exchange.

Allow me to introduce some of them:

Asian Bamboo AG:
Incorporated in Hamburg, functions as a holding for different Chinese enterprise, following a integrated business model. Forestry, harvesting, processing is all done by subsidies.
IPO in Frankfurt Prime Standard 2007, another private placement following in 2009. Now 43% free float.
Main products by the leased plantations are bamboo timber as well as fresh and processed bamboo shoots. Domestic demand accounts for most of the revenue. Also they are starting up a bamboo fabric production, competing with cotton and synthetic (petroleum) fabric.
They also experimented with the production of paper, somehow this business got "moved" in 2011 to another company, in which they since 2010 hold a 20% stake. This is a bit mysterious to me.

United Power:
IPO June 2011, Prime Standard Frankfurt, 18,45% free float.
Pre-IPO Investors Lockup: 6 months, Founding and Controlling Shareholders: 12 months.
Manufactures engine-driven power equipment, like generators, engines, etc.
Follows a strategy of both ODM business for third parties and own brand products with competitive pricing.

 KINGHERO AG:
  IPO in August 2010, Frankfurt Entry Standard. 12 months lock-up for existing shareholders. Mai 2011 secondary offering. Free float on August, 19th was 37,9%.
Designs, manufactures and sells primarily casual wear under its own brand. Their sales network cover 30 cities in whole China.

All of those enterprises have something in common: They are all valued very very low.
I will dig into the financials of some of these enterprises at a later time!