Goldman Sachs Group Inc. is sticking with its bullish view on Chinese stocks in Hong Kong, saying valuations are inexpensive and improving economic data will spur a rebound. “The snapback in China could be fairly meaningful,” Timothy Moe, chief Asia Pacific equity strategist at Goldman, said in an interview Wednesday. The MSCI China Index has slumped more than 30 percent from its April peak as a mainland equity rout rippled across the Hong Kong border and data pointed to a deepening economic slowdown.