... .High luminous efficiency 4.Long lifespan,reliable quality&good price Energy Saving Light Bulb Product Specification1. Optional Housing: PBT 2. Average Life: 6000 ... radom before shippment 5. Many years OEM experience Energy Saving Light Bulb ApplicationHome, Offices, Shops, Department Stores, Clubs, Restaurants, Hotels, Supermarkets power energy saving/ global energy saving bulb