Welcome to our company Mr white. My name is Yan Hua, the secretary of Mr Wang.

怀特先生，欢迎光临。我叫严华，是王先生的秘书。

Welcome to our company, My name is Jon Dahl Green. I'm in charge of the export department. Let me give you my business card.

欢迎到我们公司来。我叫格林·丹约翰，负责出口部。这是我的名片。