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Images record Gaoping's 40-year journey

chinadaily.com.cn | Updated: 2018-08-16 07:00
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Plastic film mulching technology was popular among farmers in 1986. [Photo by Qin Hongyu/cpanet.org.cn]
Greenhouse planting technology was widely used in agriculture in 2010. [Photo by Qin Hongyu/cpanet.org.cn]
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