The Shanghai Composite is down 15% from the November highs and has key support at 2560.

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China's Shanghai Composite shed 1%, after running up 3.2% over the previous two sessions, ahead of key trade data on Friday and inflation and industrial numbers over the weekend.

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The Swach's cartridge, a key component of the system, resembles Edison's electric bulb and is made up of a composite of rice-husk ash (a highly porous material derived out of paddy husk) and fine particles of nano-silver, which inhibits bacteria growth.

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