Prohibited/restricted business
Business scope of a business entity in Taiwan must be registered with the government and disclosed to the public prior to commencement of operations (List of Business Category Codes). And some of the industries are subject to high government controls:
Industries prohibited or restricted to foreign investors
For example, manufacture of chemical material, fertilizers and Nitrogen compounds, plastic and rubber materials, Man-made fibres. (List of forbidden or restricted items to foreign investors)
Industries highly regulated and requiring a license
A industry with Business Category Code ending with “1” is highly regulated and requires a license. Such intensively regulated business includes the import of tobacco and alcohol, manufacturing of medical equipment, etc.