Its strategy rests on two beliefs: first, a global product offers economies of scale with which local brands cannot compete, and second, consumers in the 21st century are drawn to "global" as a concept.

　　主干：Its strategy rests (on...)

　　主句用了rest on短语。冒号后的first...and second...用以解释说明冒号前的two beliefs，可以看做是该名词短语的同位成分。with which引导定语从句修饰economies of scale(规模经济)。句末的be drawn to表示“为...所吸引”，as a concept介词短语作global的后置定语，“作为概念的全球化”，或“全球化概念”。

　　译文：公司的策略基于两个信念：首先，全球性的产品能够提供地方品牌无法与之竞争的规模经济;其次，21世纪的消费者认可“全球”这个概念。