China's deep supply-chain network is hard to replicate quickly elsewhere, making it difficult for some factory owners to move.

WSJ: Bangladesh Unrest Risks Derailing Its Textile Boon

Some factory owners say that conditions are more difficult now than they were in 2008, at the beginning of the global downturn.

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Some factory owners may be in pursuit of a quick profit.

WSJ: Business Asia: Letter from a Bangladesh Factory

Some company and factory owners have moved to Egypt, Lebanon and Jordan and that means the money has moved to these places.

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