北京
On the Third China International Supply Chain Expo, McDonald's China, along with 11 supplier partners, showcased their collaboration in the form of "McChain". The initiative aims to enhance supply chain quality, efficiency, and sustainability through innovation and cooperation. (Photo by Wei Wan/China Youth Daily)
By Wang Xinyuan, Fu Rui,Zhang Weiyi(intern) and Wei Wan/China Youth Daily
來源：中國青年報客戶端
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