Customer name: BRANCH OF HO CHI MINH CITY POWER CORPORATION LIMITED – HO CHI MINH CITY POWER INFORMATION TECHNOLOGY COMPANY – Headoffice: Country: Vietnam Standard: ISO-IEC 27001:2013 Scope: Provision of an information security management system

Customer name: Veritas South Country: USA Standard: ISO 9001:2015 Scope: Precision Machining of Metal Parts Certificate number: US-10089-QMS Certificate Expiry Date: 21 December 2023

Customer name: Houston Oilfield Equipment, Inc. Country: USA Standard: ISO 9001:2015 Scope: Design Manufacture of Chokes, Adapter and Spacer Spools, and Associated Products for the Oil and Gas Industry Certificate number: US-10033-QMS Certificate Expiry Date:

Customer name: ZION JOINT STOCK COMPANY Country: Vietnam Standard: ISO-IEC 27001:2013 Scope: Provision of E-wallet service, Payment gateway service, Collection and payment support services Statement of Applicability: SOA V1.1, July 29, 2022 Certificate number: VN-10011-ISMS

Customer name: Capricorn Associates Country: Pakistan Standard: ISO 9001:2015 Scope: Manufacturer & Exporter of industrial minerals Certificate number: PK-10074-QMS Certificate Expiry Date: 14 June 2024

Customer name: Acadiana Manufacturing LLC. Country: USA Standard: ISO 9001:2015 Scope: Precision Machining of Metal Parts on Turn Key Basis Certificate number: US-10025-QMS Certificate Expiry Date: 21 August 2026

Customer name: GMO-Z.COM RUNSYSTEM JOINT STOCK COMPANY – Site 1: Country: Vietnam Standard: ISO 9001:2015 Scope: Software production and outsourcing for Japanese clients; Packaged software production for Vietnamese clients; provision of IT services (domains, hosting,

Customer name: TWENDEE SOFTWARE COMPANY LIMITED Country: Vietnam Standard: ISO 9001:2015  Scope: Software outsourcing for Blockchain Certificate number: VN-10013-QMS Certificate Expiry Date: 30 August 2025   Customer name: TWENDEE SOFTWARE COMPANY LIMITED Country: Vietnam Standard:

Customer name: PORT AND LOGISTICS SOLUTIONS JOINT STOCK COMPANY Country: Vietnam  Standard: ISO-IEC 27001:2013 Scope: Provision of software development solutions for port operations and post-port logistics              Statement of Applicability:

Customer name: Quanta Services Management Partnership L.P. Country: USA Standard: ISO-IEC 27001:2013 Scope: Authentication, validation, and protection of data, information systems, and networks within the boundaries of corporate IT & data centers of Quanta Services