... PCB board for better heat releasing. (Obtained patent design)3. Aluminum layer in housing for better heat emission 4 ... design)6. TUV, ETL, CE, ROHS,FCC certifications7.3 years warranty.Available led tubesLength: 2ft,3st,5ft,6ft,8ftWattage ... degreesCRI>75Color Temperature3000-3500K, 4000-6000K, 7000-10000KMaterialsAL+ Clear PCLife Time≥30000HWarranty3 yearsCertificationVDE,TUV,ETL,CE, RoHS, FCCDear ...