Despite the "tension" between the "Treasure Island" & the "Mainland", Taiwan investment in PRC continue to increase: during the first 7 months in 2007, trade between the 2 amounted to 66bn USD (Export to Taiwan totalled 13bn & 53bn in import. Taiwan is the 5th investor in cumulative FDI from 1979 to 2006 in China with 45bn USD representing 6%(after HongKong where an important part is actually Taiwanese capitaux, Japan, BVI & USA. These capital flows have made PRC the World 3rd largest receipent in FDI, after USA & UK.

KMT is yet seeking a closer trade tie with the Mainland
http://www.chinapost.com.tw/business/2007/07/03/114048/KMTs-Ma.htm