EXPERIENCE CERTIFICATE
TO WHOM IT MAY CONCERN
Date: 16 th July 2026
This is to certify that Ms. Yuko Tsuboyama, a Japanese national residing at 22-30 Shimizugaoka,
Fukuyama City, Hiroshima, Japan, and holder of Passport No. TZ2138420, was employed with
TENTAC Cambodia Inspection Co., Ltd. from 2016 until 30 th June 2026, completing an
outstanding tenure of 11 years.
During her employment with Company, Ms. Yuko Tsuboyama served as a Senior Manager and
consistently demonstrated exceptional professional capabilities, leadership, and dedication. She
possesses extensive knowledge and experience in the design, fabrication, construction, inspection,
maintenance, and supervision of bridges, steel structures, steel towers, steel pipes, and various other
engineering projects.
She played a significant role in managing and coordinating operational and managerial activities
within TENT AC Cambodia Inspection Co., Ltd. Her technical expertise, strategic insight, and
ability to lead diverse teams contributed greatly to the successful completion of numerous important
projects undertaken by the company.
Ms. Yuko Tsuboyama is recognized for her diligence, integrity, positive attitude, and strong
commitment to her responsibilities. Throughout her service with TENT AC Cambodia Inspection
Co., Ltd., she maintained an excellent professional record and earned the respect and appreciation
of colleagues, clients, and management.
To the best of our knowledge, Ms. Yuko Tsuboyama has never been involved in any activities
contrary to the interests of the state or government. We have full confidence in her character,
professionalism, and ethical conduct.
KUNiffiKO HASffiMOTO
Managing Director
TENTAC INSPECTION CAMBODIA CO., LTD.