(Bloomberg) -- A spate of defaults by Chinese borrowers with seemingly impeccable onshore ratings has left antsy investors in the world’s second-largest credit market craving credible research to distinguish good debt from bad. Now a little known startup is seeking to tap that demand and is winning fans.Most Read from BloombergMacKenzie Scott Files for Divorce From Science Teacher HusbandMeta to Cut Headcount for First Time, Slash Budgets Across TeamsTop Apple Executive Is Leaving After Making C