求翻译：本公司是私营的有限责任公司，有多人组建而成，是一家集牛奶制造营销一体化的食品行业。在首席执行官的领导下，分别有市场调研部，技术研发部，销售采购部，财务部，策划宣传部，人事部和售后服务部。是什么意思？

The company is a private limited liability company, multiple people to form formed, is a collection of milk marketing integrated food manufacturing industry. Under the leadership of the Chief Executive Officer, respectively, market research department, technical research and Development Department, sales Purchasing Department, Finance Department, propaganda Department of planning, personnel and Service Department.