1.Unpack all parts from cartons carefully. 2.Carefully pull-out excess power cord from the lamp base while assembling to prevent the cord from becoming twisted. 3.Tighten the tube(B)into the base(A)until tight. 4.Tighten the tube(C)into the tube(B)until tight. 5.Tighten the tube(D)into the tube(C)until tight. 6.Tighten the tube (E)into the tube(D)until tight. 7.Tighten the tube (F)into the tube(E)until tight. 8.Tighten the lamp socket(F)into the tube(F) until tight. 9.