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Hydropower Station Maintenance

ZHANGYE, CHINA - FEBRUARY 28, 2024 - A maintenance worker checks and maintain the runner of a hydrogenerator at Sandaowan hydropower Station in the upper reaches of the Heihe River in Zhangye city, Gansu province, China, Feb. 28, 2024.

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Hydropower Station Maintenance

ZHANGYE, CHINA - FEBRUARY 28, 2024 - Maintenance workers perform a rotor insulation test at Sandaowan hydropower station, located in the upper reaches of Heihe River, in Zhangye city, Gansu province, China, February 28, 2024.

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Hydropower Station Maintenance

ZHANGYE, CHINA - FEBRUARY 28, 2024 - Maintenance workers check pressure equipment in power generation operation at Sandaowan Hydropower Station in the upper reaches of Heihe River in Zhangye city, Gansu province, China, February 28, 2024.

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Hydropower Station Maintenance

ZHANGYE, CHINA - FEBRUARY 28, 2024 - A maintenance worker checks and maintains the rotor coil of a hydrogenerator at Sandaowan hydropower station located in the upper reaches of Heihe River in Zhangye city, Gansu province, China, Feb. 28, 2024.

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Hydropower Station Maintenance

ZHANGYE, CHINA - FEBRUARY 28, 2024 - A maintenance worker checks the rotor of a hydrogenerator at Sandaowan hydropower Station, located in the upper reaches of Heihe River, in Zhangye city, Gansu province, China, Feb. 28, 2024.

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Hydropower Station Maintenance

ZHANGYE, CHINA - FEBRUARY 28, 2024 - Technicians use an infrared thermometer to check the operating temperature of a 110kv switch station at Sandaowan Hydropower station in the upper reaches of the Heihe River in Zhangye city, Gansu province, China, Feb 28, 2024.

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Hydropower Station Maintenance

ZHANGYE, CHINA - FEBRUARY 28, 2024 - Technicians inspect power generation operation equipment at Sandaowan Hydropower Station in the upper reaches of Heihe River in Zhangye city, Gansu province, China, Feb. 28, 2024.

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Hydropower Station Maintenance

ZHANGYE, CHINA - FEBRUARY 28, 2024 - Maintenance workers check and repair coolers at Sandaowan hydropower Station in the upper reaches of Heihe River in Zhangye city, Gansu province, China, Feb. 28, 2024.

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Hydropower Station Maintenance

ZHANGYE, CHINA - FEBRUARY 28, 2024 - Maintenance workers check and maintain a water oil basin at Sandaowan Hydropower Station in the upper reaches of Heihe River in Zhangye city, Gansu province, China, Feb. 28, 2024.

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Hydropower Station Maintenance

ZHANGYE, CHINA - FEBRUARY 28, 2024 - Maintenance workers check and maintain the rotor of a hydrogenerator at Sandaowan hydropower Station in the upper reaches of Heihe River in Zhangye city, Gansu province, China, Feb. 28, 2024.

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Hydropower Station Maintenance

ZHANGYE, CHINA - FEBRUARY 28, 2024 - Maintenance workers check and maintain the rotor and runner of a hydrogenerator at Sandaowan hydropower Station in the upper reaches of the Heihe River in Zhangye city, Gansu province, China, Feb. 28, 2024.

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Environmental Improvement in China

ZHANGYE, CHINA - MAY 25, 2023 - Environmental volunteers and residents walk in Sandaowan Reservoir area in Zhangye city, Gansu province, May 25, 2023. In the past five years, Zhangye has released more than 1.2 million wild fish into the Heihe River Basin, more than 32 million grass carp, silver carp, bighead and other economic fish, restoring the fishery resources of the Heihe River Basin in the Qilian Mountain Conservation Area and promoting the ecological development of the Heihe River Basin.