When things are massed produced in one country it will not be as special or unique because you hear the name all the time. Take China for example it makes everything from paper to satellites and rockets. People only know the common products that China produces and neglect the fact that other products they produce are good quality. I'm not talking about shoes,clothes,furnitures or other stuffs you can find at Walmart. I am talking about Computers, semiconductor chips, super computers, satellite technologies, military technologies, aerospace technology, their shipbuilding industry(3rd largest currently), biotechnology, porcelains(thats why its called China),silks, tea, mobile phones and other consumer electronic products. Take the current LCD and plasma tv you see at your local electronic shop, it may have a Panasonic, Hitachi or even Sony labled on it, but some of them were actually made by TCL(worlds largest TV maker) and the Japanese brand was slapped on to the product.
Anyways as for what nations products regards for being the best,well it really depends on what kinda product you're referring to.
For vehicles it would be Germany,Japan,and Italy
Electronics? Japan,Germany,Korea, and Taiwan
Furnitures? Sweden,Netherlands and Italian
Perfume or cosmetics? France, and Italy
Wine? Italy, France, and Spain
Leather? Spain and Italy
Watches? Switzerland
Chocolates? Belgium
Superb quality sound systems? Britain,Netherlands, Denmark, USA, and some Jap ones.
glass? Italy (venice)
Cigars? Cuba
Coffe? Columbia
Tea? India,China, Sri Lanka and Japan
Ceramics/porcelain? Britian, Italy, China, Japan, and France.
Steel? Czech Republic, Japan, S.Korea, and USA
Mangos? Philipines (they're the best)
Durian? Thailand
Apples and Oranges? USA
Ginseng? S.Korea, and China
Silk? China
Salmon? Canada
Vodka? Russia, and Sweden
ok thats all I can think about for now.