CERTIFICATE_OF_COURSE_COMPLETION_Waiyawit_Rattanawong[1]
BSCI Auditor Upgrade Course-Waiyawit R.17-03-2015
Certificate of SA8000.2014 Revision Webinar - Part 2 30-09-2015 by Waiyawit R
ICTI Certificate of Training of Mr. Waiyawit R.
Certificate of SA8000.2014 Revision Webinar - Part 1 06-02-2015 by Waiyawit R