With him from left are his directorate officers assistant director enforcement and liaison mr chan kwok - ki , assistant director control mr david chiu wai - kai , assistant director personal documentation mr tsoi hon - kuen , deputy director mr chow kwok - chuen , assistant director information systems mr raymond wong wai - man , assistant director management and support mr simon peh yun - lu , and assistant director visa policies ms helen chan wing - mui 图示黎处长与部门处长级人员： （由左至右）助理处长（执法及联络）陈国基先生，助理处长（管制）赵伟佳先生，助理处长（个人证件）蔡汉权先生，副处长周国泉先生，助理处长（资讯系统）黄威文先生，助理处长（管理及支援）白韫六先生及助理处长（签证及政策）陈咏梅女士。
