... fixtures, enclosed fixtures could shorten bulb lifespan. Mester Advantages:1. a plant of 6500 square meters,over 150 employees;2. 11 ... ~13 days delivery time, 5 years warranty;3. Energy Star, UL, ETL, FCC, CE, RoHS,TUV certifications;4. Strong R ... before delivery;7. Neutral Package, or customer color box package upon requirements.