About Anenj
Built for the air systems people rely on
Energy Environmental Technology (Beijing) Co., Ltd.Anenj is the international brand of Energy Environmental Technology (Beijing) Co., Ltd. Since 2009, we have focused on indoor air purification through product design, research and development, manufacturing and engineering support.
2009Founded in Beijing
Our Purpose
Healthy air is a building responsibility, not an afterthought.
We build purification solutions for the parts of a building that people depend on every day: central HVAC systems, fresh-air systems, occupied rooms and facility operations.
Our work begins with the actual air path, target pollutant and installation environment. That is how we help project teams move from a technical requirement to a practical product and delivery scope.
Company Development
From indoor air purification specialist to multi-category IAQ partner
The company has grown its product and delivery capability around the changing needs of commercial buildings, public facilities and export customers.
Established in Beijing
Indoor air purification became the company’s core direction across design, R&D, production and engineering service.
Production bases expanded
Production bases in Tianjin and Hebei were established to serve the Chinese market and build a stronger manufacturing foundation for international customers.
Solutions for building air systems and occupied spaces
The Anenj portfolio now spans HVAC purification, fresh air, odor control, IAQ monitoring and portable purifier models for project and procurement needs.
What We Bring
One team across the path from requirement to delivery
For project owners, contractors, distributors and procurement teams, Anenj combines product capability with practical coordination.
Application-led design
Product selection begins with the building type, air system, installation position, target issue and operating context.
IAQ product development
R&D covers HVAC integration, fresh-air treatment, odor control, air quality monitoring and independent purifier product families.
Manufacturing coordination
Dedicated production lines support multi-category products, configuration review and coordinated order preparation.
Technical documentation
Model schedules, certificates, product documentation and configuration confirmation support buyer evaluation and project communication.
Export preparation
Destination-specific voltage, plug, labeling, packaging and documentation requirements can be reviewed before production is confirmed.
Engineering support
Our team can coordinate preliminary selection, installation guidance and operational information with the buyer’s project team.
Where We Work
Air-quality solutions for the environments that need them most
Our products are applied across central HVAC purification, renovation-pollution treatment, healthcare, industrial production, offices, hotels and apartments, transit, education and senior-care environments.
Commercial buildingsHealthcare facilitiesTransit systemsEducation campusesHospitality and residencesIndustrial facilities
Explore application solutions
Standards, Patents & Recognition
Technical evidence that supports confidence
Anenj maintains management-system certificates, CE conformity records, invention and utility patents, trademark registrations, standards participation, qualifications and industry recognition. These records are available for project qualification and buyer review.
Representative References
Trusted across complex environments
The names below are selected reference projects from a broader delivery portfolio.
Microsoft China HeadquartersPeking Union Medical College HospitalChina-Japan Friendship HospitalBeijing Metro Lines 7 and 14Alipay S SpaceXiong’an Xuanwu Hospital
View project references
Start a Conversation
Tell us about your building, system or procurement requirement.
Share the application, air system, project location and target problem. Our team will help frame the right technical response and next step.