Chen Baoshan, chief of the operations management department of Beijing Environment Sanitation Engineering Group Co. Ltd, attributed the decline to the growing public awareness of air quality.

据北京环卫工程集团有限公司运营管理部主任陈宝山表示称，这一现象的原因是因为公众对空气质量的认识日益加强。

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Hangzhou Gele Environmental Engineering Equipment co., Ltd. is a sales company which service municipal sanitation and industrial field.

杭州健力环境工程设备有限公司是一家服务于市政环卫和工业领域的专业销售公司。

youdao

Hangzhou Gele Environmental Engineering Equipment co., Ltd. is a sales company which service municipal sanitation and industrial field.

杭州健力环境工程设备有限公司是一家服务于市政环卫和工业领域的专业销售公司。

youdao