bidirectional flow Ventilation system
1. Surface spray treatment (color can be customized) or galvanized sheet color;
2. High-end heat recovery, imported heat exchange materials (Japan Prince), mildew, antibacterial, fire retardant;
3. Optional sensor, WiFi connection (doodle), LCD controller;
4. H11 or above HEPA filter is optional for better purification effect;
5.10 wind speed;
6. Standard EC fan