Tech:

In this picture taken May 8, 2017, smartphone products are turned off and on 100,000 times at the testing facility in the Oppo Electronics Corp factory in Dongguan, Guangdong province. [Photo/VCG]

Chinese smartphone vendors Xiaomi, OPPO and Vivo signed three-year deals worth $12 billion to buy smartphone components and chips from Qualcomm Inc.

Mobike signed an agreement to buy polyurethane tires from Dowdupont.

Software company SAS signed a cooperation agreement with Shenzhen Zhenghong Technology to establish the Big Data Innovation Center for Smart Manufacturing in Shenzhen.