How badly, on average, did high-tech companies perform in the Greater
China regions (China, Hong Kong & Taiwan) during the period from July
2002 to date? In particular, what are the reasons or factors that have
caused or contributed to their poor performance during this period?

By way of background, I am writting a piece on the poor performance of
these companies and the reasons for their poor performance. I need
just 1 or 2 paragraphs of succinct well phrased material to include in
the piece.