World’s first graphene electronic paper has been developed by which country?

China
China has recently developed the world’s first graphene electronic paper that will catapult the material to a new level. It is developed by The Guangzhou OED Technologies in partnership with a company in Chongqing Province of China. As compared to traditional e-papers, graphene e-paper is more flexible and has more intensity and has high-light transmittance, which means optical displays will be much brighter. The production cost of graphene e-paper (derived from carbon) will be much lower than the traditional e-papers, which use the rare, expensive metal indium.