1,Payment:T/T 100% in advance 2,Delivery:7~10 days after payment 3, ... for dimmers and(or) circuits, dimming range is from 10%~100%, no flickering.* Outstanding PerformanceEffiecent > 80% , PF > 0.9, life span ... , Legrand, Osram,and GE etc. dimming range is from 5~100% and very stable9) LED Type: CREE XPE 10) Life Span ...