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Address: No. 6, Ya'an Road, Shilong Industrial Zone, Mentougou District, E-mail：bjldhhb@126.com
Postcode：102308 Tel：010-69808103 / 69808003 Fax：010-69808102
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National High-tech Enterprise Certificate -
Zhongguancun High-tech Enterprise -
Highest Class Qualifications of Special Environmental Engineering Design -
Highest Class Qualification of Environmental Protection Engineering -
Safety Production License -
Quality Management System Certification Certificate-2018 -
Environmental Management System Certification Certificate-2018 -
Staff Health and Safety Management System Certification Certificate-2018 -
Top 10 Brand Employers in the Smoke Industry of the "Polaris Cup" in 2019 -
Top 10 Coking Denitrification Enterprises in the "Polaris Cup" in 2019 -
Top 100 Private Enterprises in Beijing with Social Responsibility in 2018 -
Top 100 Private Enterprises in Beijing with Technological Innovation in 2018 -
Key Environmental Protection Practical Technology Demonstration Projects In 2018 -
Capital Action Blue Sky Technology Demonstration in 2016 -
Membership Certificate of China Environmental Protection Industry Association -
Beijing Advanced Unit for Building Harmonious Labor Relations
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