Friendly clan, active leader and core party of clan, help and support for active members.
For sample I got help from clan for leveling my tank (2 evenings 2-4 h: 70->80) and my spoil (1 evening 70-79). Got some (A grade) equip from clan for my tank.
P.S. Unfortunately I cannot play as much time as before (My work and study (started from 1 Oct) take all the time).