You can login by Username and Password same as your personal computer (AD User).
If there is no company name on the list, please click on "Register". After the registration is successful, you can use the registered email/password to access the system by selecting the company name as "Other".
PTT Public Company Limited gives highest priority to the protection of the personal data in order for you to ensure that we will protect and manage your personal data in accordance with the laws concerning personal data protection. Please find the Personal Data Privacy Notice Here