To keep its supply chain simple, Aldi stocks barely 1, 000 products; some of its rivals stock 100, 000.

为维持简单的供应链，阿尔迪存储的产品仅有1000种，它一些对手则达100,000种。

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Demand for dairy products is voracious, but supply is iffy because of India's awful roads and patchy chill chain (ie, it is hard to keep milk chilled from pail to lips).

印度人对于牛奶的需求是非常大的，但是由于印度糟糕的道路系统以及良莠不齐的冷却链有时候甚至都无法保证送到消费者口中的牛奶是新鲜的。

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Besides, a company might want to keep control of its supply chain to protect its brand and knowledge.

ECONOMIST: Re-engineering in real time

The biggest union, Unite, wants to keep production, design and as much of the supply chain as possible in Britain.

ECONOMIST: Why Tata Motors is favourite to buy Jaguar and Land Rover

And we need more of those, so you keep on studying the supply chain management.

WHITEHOUSE: Rural Tour Day 3: Atkinson, Ill Town Hall