DearPurchasemanager, &nbs=p; 4WST64ledfilamentbulbwiththefollowingfeatures:= &nbs=p; 1)ImportedEpistarCOB,8*38mmfilament &nbs=p; 2)luminousefficiency:70-120lm/w &nbs=p; 3)differentshapefilamentoption &nbs=p; 4)fillwithnoblegasandreduceluminousdecay &nbs=p; 5)Linearconstantcurrentdimming &nbs=p; 6)CRI>80 B.RGDSJunewww.sunriseleds.com