Beijing Tong Ren Tang Healthcare Investment, a provider of healthcare services based on traditional Chinese medicine, postponed its Hong Kong initial public offering (IPO) on Friday amid tepid investor demand for its shares. The delay is the first of its kind during the current IPO boom. New share offerings in the city raised about US$11.64 billion as of March 18 this year, up 385 per cent from about US$2.4 billion a year earlier, according to LSEG Data & Analytics. Tong Ren Tang was one of six...