To open a company, you can enter with an F visa as before. You need to acquire an application for the name of your business after entry, and contact an auditing firm that will verify the capitalization of your business, and apply for registration certification from your local State Administration of Industry and Commerce. After gettting the approval for and create the company seal from the local police department, you need complete all other forms of company registration with authourity. For more details, you can check on net.