Apple supplier Luxshare Precision Industry is gauging investor interest for a US$3.1 billion Hong Kong listing that would be the city’s largest so far this year, amid a fundraising frenzy for technology-related stocks.The Chinese company, which assembles iPhones and other Apple products, is among nine companies seeking to test investor demand for Hong Kong listings, underscoring a growing wave of cross-border listings as Chinese technology companies tap Hong Kong’s offshore capital pools.The contract manufacturer, which is already listed in Shenzhen, is set to offer 383.5 million shares at a maximum of 63.28 Hong Kong dollars a share. The shares are…