Overseas capital has poured into China’s hard technology champions at an unprecedented pace, driving the market value of their mainland equity holdings to an all-time high by the end of this year’s second quarter.Global investors have increased their exposure to China’s advanced manufacturing and technology companies, helping push the northbound holdings under the mainland-Hong Kong Stock Connect scheme to a record high of 3.13 trillion yuan (US$461.65 billion) by the end of June, according to...