By encouraging restaurant patrons to recycle food containers, the company has decreased its waste by about 30%, recovering one million tons of corrugated cardboard products alone in the past 10 years.

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More a squatters' camp than a village, it nevertheless offers a shabby air of permanence, with at least a hundred or so Zulus residing in corrugated tin shacks and cardboard shanties, all either on their way to someplace else or with no other place to go.

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Still, after another hike in procurement costs last autumn, the Japan Corrugated Association, the industry body, called on its members to start raising cardboard-box prices.

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