System Management
Yinchuan LONGi, Ningxia LONGi, Wuxi LONGi and Xi’an wafer Slicing Factory all obtained the quality, environment, and occupational health and safety management system certifications; Ningxia LONGi obtained the energy management system certification.

Sewage discharge license
Yinchuan LONGi, Ningxia LONGi, Wuxi LONGi and Xi’an Wafer Slicing Factory all obtained the sewage discharge licenses. All pollutants reach the national discharge standard. 
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