> Based on the conducted element analysis, white foreign substance is a fire retardant ingredient of plastic resin materia
Problem
BLDC
19 September 2014
White foreign substance on
Impeller
Product Name Model No. Lot No.
9S1212H403 051419P
> This phenomenon might have been brought by unclean mold die internal surfaces or clogged gas vent holes of the
mold die cavity.
> White foreign substance was not detected on appearance inspection stations in our processes because the white
foreign substance will only be visible after few weeks.