Amazon and Apple are ranked as the world’s most valuable brands, Reuters reported. The ranking is based on Kantar’s BrandZ survey. Still results show that Chinese brands are rising up the leaders list and are more valuable than Europe’s top brands. The e-commerce firm Amazon remained the world's most valuable brand with an estimated value of $684 billion, followed by Apple. The high tech conglomerate is valued at $612 billion and Google at $458 billion ranks third, Kantar said.