On 15 February 2012, Ms. Sopacha Dhumrongpiyawut including her executives went to PPT headquarter to visit Human Resource Development System of PPT. In this seminar, Gunkul received the honor from Ms. Yawanoot Klawsuksatit as the Human Resource Manager to introduce the Organization Structure of PPT Public Company Limited as well as give the suggest how to develop the Human Resource System along with Company's Culture.