Investor Presentaiton

Substantial Progress in Sci-tech Innovation to Bolster Core Competitiveness ④ 中国电信 CHINA TELECOM Sci-tech innovation elements promptly assembled with substantial progress in problem-tackling efforts in key core technologies China Telecom was awarded with "Enterprises with Outstanding Contribution to Sci-tech Innovation" for 2019-2021 by SASAC 0 Tailor-made software development, integration delivery D SaaS PaaS • . • Accelerated adoption of applications IT platform: 100% cloud-migrated, proprietary ratio 48.9p.p. Business platform: >30Mil devices carried and connected for Internet of Video Things, ~80Mil devices carried and connected for Internet of Things Problem-tackling of core technologies Cloud: Cloud OS4.0 commercial used, integrated software/hardware products launched, e.g. proprietary servers "Zijin series", exchanges, DPU, etc., industry-leading cloud computer, cloud storage, CDN • Network: Scale deployment of proprietary all-fibre network and IP network controller, pioneer in completing three-layer decoupling of 5G core network Security: Security products, e.g. proprietary e-Surfing Security Brain, Quantum-encrypted Calls, etc., Al: First proprietary Al cloud camera launched, certain algorithms industry-leading, e.g. "Kitchen Monitoring", etc. Initiator of original cloud computing technologies Increased R&D initiatives RMB5.7Bil +54.8% Grew proprietary R&D achievements 74 items on achievement list in 1H2022, 43.1x R Note: 1. 2. Cloud-network integration • Initiator of fundamental researches . Innovation platform: To make "National Research Centre for Cloud-network Infrastructure Security" the industry benchmark Joint laboratory: Jointly commenced >40 research projects with leading universities and scientific research institutions Network ΑΙ Security Quantum • Patent: Accredited with National Patent Silver Award, +1,128 new patents in 1H, 4145% Developed R&D team No. of R&D personnel 446% vs year beginning Introduced leading talents Established >10 academician leading technology advisory expert committees Introduced >70 industry leading talents "R-D-O"="Research - Development - Operation" R&D initiatives include expensed R&D initiatives and capitalised R&D initiatives 2022 Interim Results | 14

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