From Asia Times Online (link):
The Taiwanese government on Wednesday introduced tightened measures on managing cross-strait economic and financial interactions with mainland China. The measures include sending Taiwanese officials to the mainland to investigate Taiwanese investments and the establishment of channels to track the capital of Taiwanese companies investing in the mainland. Taiwanese authorities have so far failed to create an effective mechanism to monitor the island’s investments in mainland China.
In 2001, Taiwan replaced the ineffective “no haste, be patient” policy on mainland investments with a “proactive liberalization with effective management” policy, which restricts Taiwanese investments in the mainland to 40% of a company’s asset value. Regulations ban more than 100 kinds of industries from investing in mainland China at all.