PVC cover ( octagon) 燕屋通风盖 (八角形)
PVC cover  ( octagon) 燕屋通风盖 (八角形) Accessories 配件 Swiftlet Farming Accessories 燕屋专用配件 Johor Bahru (JB), Malaysia, Desa Jaya Supplier, Suppliers, Supply, Supplies | Nest Tech System Sdn Bhd
PVC cover  ( octagon) 燕屋通风盖 (八角形)

用于燕屋通风孔以减低气流或减少从通风孔折射进来的光线.

Swiftlet house ventilation holes - to reduce air flow & sunlight.
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