Hi Tsering,
About Top 18W have 2 reason :
1) Top #110215D2 Bad (removed) meaning all of Top removed out of furck (255 pieces- Red circle) is bad parts from RA15001(JN15002). (Please see picture below)
2) Top #120315D2 Bad with system (278 pieces- Red square) waiting from removed out of furck. I think about 200 pieces can be reuse them.
Estimate Top 18 white can be come reuse about 200 pieces.
About good system 5,364 pieces (RA15009) is ready for shipment.
Thank you,
Tiger.