What is a dark factory? Is it pitch black inside? In today's Future China, a Xinhua correspondent shows you how smart and efficient machines work in a dark factory.
Produced by Xinhua Global Service■
廣告（請繼續閱讀本文）
What is a dark factory? Is it pitch black inside? In today's Future China, a Xinhua correspondent shows you how smart and efficient machines work in a dark factory.
Produced by Xinhua Global Service■