Mr . leland sun was previously a senior managing director of bear stearns asia ltd and an executive director of goldman sachs asia ltd . his experience encompasses mortgage securitization and the fixed income market 孙立勋先生获委任前,为美国贝尔斯第恩斯公司bear stearns asia ltd的高级董事总经理亦曾在高盛亚洲有限公司goldman sachs asia ltd担任执行董事一职。