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致力于节能减排技术的研发与应用，现有业务聚焦于造纸行业重要设备的设计、制造、销售以及与节能降耗和环境保护相关的技术服务和工程实施 -
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products
Product Center
The company’s products and services now serve dozens of countries and hundreds of paper‑making enterprises worldwide.
Product Center
Enclosed hood
Product Introduction
Zhengding Environmental has carried out multiple improvements and upgrades to conventional enclosed hoods, incorporating new materials and innovative designs to ensure enhanced performance and an optimized structure.
Zhengding Environmental’s enclosed hoods feature excellent thermal insulation and airtightness, an instant fire‑suppression system, precise zero‑position control, and balanced airflow distribution within the enclosure, delivering reliable performance. They protect operators from noise, dust, thermal radiation, and humidity, creating a clean, comfortable workshop environment.
Zhengding Environmental’s hood products have earned high praise from customers for their quality, ease of use, and maintainability.
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Applicable paper types
Product Cases
Product Performance
| Serial number |
Customer Name |
Model number |
Paper type |
Scope of Supply |
Quantity |
| 1 |
Xinjiang Korla Xinrui Paper Industry |
4800–600 meters |
Containerboard |
4800–600 m³/h corrugated cardboard simple enclosed hood and exhaust ventilation system |
|
| 2 |
Yida Paper Industry, Zhangzhou, Fujian |
4200–500 meters |
Containerboard |
4200–500 m³/h corrugated cardboard simple enclosed hood and exhaust ventilation system |
|
| 3 |
Dahua (Nigeria) Paper Industry |
4,800–700 meters |
Containerboard |
4800–700 m³/h closed‑circuit hood for the dryer section of a containerboard machine, Exhaust ventilation and exhaust heat recovery system, baghouse air supply system |
|
| 4 |
Anhui Zhoulaiti Paper |
2640–300 meters |
Specialty paper |
2640-300-meter special paper simple enclosed fume hood and exhaust system |
|
| 5 |
Yueyang Linzhi Co., Ltd. |
3800–500 meters |
Containerboard |
Air hood retrofit for the 3800–500 m³ boxboard machine No. 19 in the deinking pulp line |
|
| 6 |
Shandong Xinhé Paper Engineering Co., Ltd. |
4560–550 meters |
Coated whiteboard paper |
Bangladesh 4560-550 paper machine, closed hood for the dryer section, Exhaust ventilation and exhaust heat recovery system, baghouse air supply system |
|
| 7 |
Quzhou Dongda Specialty Paper Co., Ltd. |
3300–600 meters |
Specialty paper |
3300/600 Specialty Paper Yankee Hood, Hot-Air System, and Simple Post-Drying Hood Exhaust System |
|
| 8 |
Shandong Fengyuan Zhongsheng Paper Industry |
4,300–800 meters |
Coated whiteboard paper |
Enclosed Hood Dehumidification System |
|
| 9 |
Zhejiang Huachuan Industrial Group Co., Ltd. |
4800–500 meters |
Spool paper |
Enclosed hood modification, heat recovery system |
|
| 10 |
Shantou Yaode Paper Co., Ltd. |
3550–500 meters |
Coated whiteboard paper |
Enclosed hoods, heat recovery systems |
|
| 11 |
China Light Industry Changsha Engineering Co., Ltd. |
5,800–1,200 meters |
Containerboard |
Closed-Enclosure Exhaust Heat Recovery System for the Comprehensive Utilization of Renewable Resources Project in Qianxinan Prefecture (PM5 & PM6) |
|
| 12 |
Yunnan Dongsheng Paper Industry Co., Ltd. |
6,800–1,100 meters |
Containerboard |
Paper machine enclosed hood, exhaust ventilation and waste heat recovery system, baghouse air supply system |
|
| 13 |
Shandong Jin Cai Lun Paper Co., Ltd. |
2640–500 meters Left phone |
Specialty cultural paper |
2640mm–500m/min Special-Grade Cultural Paper Waste Heat Recovery Enclosed Hood System |
|
| 14 |
Hunan Jielong Paper Industry’s Algeria Project |
4,400–500 meters |
High-strength corrugated paper |
High-Strength Corrugated Paper Air Hood and Ventilation System |
|
| 15 |
Xinjiang Dongshengxiang Paper Industry Co., Ltd. |
Paper 4400–650 meters |
High-strength corrugated paper |
Modification of the high‑strength corrugator’s air hood, paper‑stabilizing bellows system, and bag‑area blow‑off system. |
|
| 16 |
Shandong Jin Cai Lun Paper Co., Ltd. |
2640–500 meters Right phone |
Specialty cultural paper |
2640mm–500m/min Special-Grade Cultural Paper Waste Heat Recovery Enclosed Hood System |
|
| 17 |
Taian Yuanwang Energy Investment Co., Ltd. |
1880-500/Four units 3600–800 per unit |
Specialty cultural paper |
30-ton functional paper machine hood ventilation fan heat recovery system (total of 5 sets) |
|
| 18 |
Shijiazhuang Tianjinsheng Nonwoven Technology Co., Ltd. |
2640–500 meters |
Filter paper |
Enclosed hood and heat recovery system |
|
| 19 |
Pucheng Dongxing Paper Industry Co., Ltd. |
5100–750 meters |
T paper |
Waste Heat Recovery System for Enclosed Hood Ventilation Systems |
|
| 20 |
Zaozhuang Hengyu Paper Industry |
1880-350/one unit 2640-150/one unit 2880-150/Three units |
Specialty paper |
Enclosed Hood Ventilation Waste Heat Recovery System |
|
| 21 |
Taian Yuanwang Energy Investment Co., Ltd. |
Three sets of factory ventilation systems |
|
Factory ventilation |
|
| 22 |
Xinjiang Dongshengxiang Paper Industry Co., Ltd. |
4800–750 meters |
Wrapping paper |
1# Air Hood and Ventilation System Retrofit |
|
| 23 |
Liansheng Paper (Longhai) Co., Ltd. |
5800-350 |
Wrapping paper |
Maintenance and Retrofit of the PM7 Paper Machine Hood |
|
| 24 |
Xuzhou Daheng Paper Co., Ltd. |
4,800–700 meters |
|
Paper-stabilizing ventilation system |
|
| 25 |
Jiangxi Sanhe Paper Industry Co., Ltd. |
3800–550 meters |
|
Paper-stabilizing ventilation system |
|
| 26 |
Zhejiang Minglu Holding Group Co., Ltd. — Thailand Project |
3800–760 meters |
Wrapping paper |
Enclosed hoods and ventilation systems |
|
| 27 |
Zhejiang Minglu Holding Group Co., Ltd. — Thailand Project |
4800–1000 meters |
Wrapping paper |
Enclosed hoods and ventilation systems |
|
| 28 |
Jiangsu Xingguang New Materials Technology Co., Ltd. |
2640–500 meters |
Specialty paper |
Enclosed hoods and ventilation systems |
Product Inquiry
Contact Information
Mobile: +86 18807310558 / +86 13907318443
Email:postmaster@hnzdep.com
Address: Room 908–909, New World Chuangdi, No. 139, Laodong East Road, Yuhua District, Changsha City, Hunan Province
Xiangtan Branch: Yuhu High-Tech Industrial Development Zone, Xiangtan City, Hunan Province, China
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