Search the major talent networks to see if there is any recruitment information for the company you want to go to. If there is, register an account on that website and apply directly on the talent network, or if registration is too troublesome, copy the company's email address and send your resume through a private email (note: many companies refuse to send resumes through attachments). If you can't find the company in the major talent networks, then try to see if the company has a company website and log in to find contact information.