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After years of dedication to the research and technology development in the filed of heat recovery and indoor air quality, Holtop has many achievements on the product innotivation and quality management, which is certified by National and International authorities.

No. 158, Hanjiachuan Village, Haidian District, Beijing, China E-mail: aiden@holtop.com.cn Tel: +86 18232080710 Tel: +86 18232080710
The Largest R&D and Production Residential ERV HRV Supplier in China
8618232080710
18232080710
18232080710
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