BusinessWire The 4th World Science and Technology Development Forum Held in Chengdu Business Wire News Nov 28, 2022 CHENGDU, China--(BUSINESS WIRE)--#basicscience--The 4th World Science and Technology Development Forum with the theme “Openness, Trust and Cooperation” kicked off in Chengdu on November 27, 2022, which was attended by more than 300 top…