产品产量的优化组合
Optimization combination of product quantity
产品品类选择准则
Product class’s choice criteria
产品品牌差异
product brand differentiation
产品品质及经济效益
quality and economical benefit of a product
菲达企业及产品介绍
Introduction on Feida enterprise and its products
国外防爆新产品介绍
new foreign products introduction
农产品产地
agricultural producing area
farm products area