Experts say drip irrigation is an innovation whose importance is growing, as climate change and rising population strain water supplies in many parts of the world.
And as demand for children to adopt has grown, so have examples of abuse, including cases of children who have been abducted or parents who have been coerced or bribed.
Revenue from the Internet is growing, but Mr. Zhang said he is cautious about pursuing larger growth in the channel, as China's shoppers expect to get only discounted products online.
China has again been preventing the renminbi from strengthening and the jury is still out on whether the country intends to depart from its mercantilist growth strategy.
As these specialists circulated around Europe, they sought to exploit the appeal of fireworks for a wider audience, including the growing middle classes.
As the President of a fast-growing global company, and with family commitments, Mr Drumm was clearly not going to be able to take time out to study full-time for an MBA.