On December 5, China Telecom unveiled the first cross-border air core optical fiber and ultra-low latency commercial transmission system at the 2025 Digital Intelligence Technology Ecology Conference. Delay is the core productivity in the AI era. In order to meet the business needs of financial and intelligent computing with sensitive delays, China Telecom built the world's first cross-border commercial air core optical fiber between Dongguan, Shenzhen and Hong Kong, with a total distance of 110 kilometers, cutting and straightening to optimize the physical routing of optical cables, overcome the problems of long-distance deployment and maintenance of hollow fiber, break the physical limits of traditional optical fiber, increase optical signal transmission speed by 30%, and reduce equipment processing time by more than 40%. China Telecom is the first in the industry to reduce the time delay between the Guangdong-Hong Kong Exchange exchange to less than 1 ms, building a solid foundation for efficient computing power collaboration.

On December 5, China Telecom unveiled the first cross-border air core optical fiber and ultra-low latency commercial transmission system at the 2025 Digital Intelligence Technology Ecology Conference. Delay is the core productivity in the AI era. In order to meet the business needs of financial and intelligent computing with sensitive delays, China Telecom built the world's first cross-border commercial air core optical fiber between Dongguan, Shenzhen and Hong Kong, with a total distance of 110 kilometers, cutting and straightening to optimize the physical routing of optical cables, overcome the problems of long-distance deployment and maintenance of hollow fiber, break the physical limits of traditional optical fiber, increase optical signal transmission speed by 30%, and reduce equipment processing time by more than 40%. China Telecom is the first in the industry to reduce the time delay between the Guangdong-Hong Kong Exchange exchange to less than 1 ms, building a solid foundation for efficient computing power collaboration.