SoftBank-backed surgical robotics company Noah Medical has begun preparations for a Hong Kong initial public offering, joining a wave of cutting-edge technology firms tapping the city’s international fundraising pool.The US-headquartered company aimed to raise more than US$100 million and planned to file its listing application as early as next year, according to founder Zhang Jian.“We want to expand our business in [mainland] China, and Hong Kong – as an international financial centre with a...