| 出生地 |
Fujian China (Mainland) |
| 牌子的名字 |
ZXL |
| 模式的数量 |
FT009 |
Features: 1. The fireproof valve is usually installed on the ventilation duct. 2. The valve door is open usually, but it will close automatically when the temperature of the air flow up to 70 degrees. 3. Material: aluminum, stainless steel or galvanized sheet.