The document contains four course completion certificates for Sitthisak Sriworapattarakul from online courses on Coursera authorized by PwC. The certificates recognize completion of courses in data-driven decision making, problem solving with Excel, data visualization with advanced Excel, and effective business presentations with PowerPoint. Each certificate provides the course name, date of completion, name of the course completer, name of the verifying PwC representative, and verification details.