JD.com has pledged more than 10 billion yuan (US$1.4 billion) under its ambitious “Double Hundred Plan” to support so-called benchmark brands across various categories, further heating up China’s on-demand delivery sector, as industry-wide daily orders reached a new high of more than 200 million. The Beijing-based e-commerce giant’s latest initiative seeks to elevate sales of select brands beyond one million items on its platform via measures that include increased traffic, marketing incentives...