Which thing have been made consumer electronic product cost increased? 

Material cost much higher than before in 2020(the special year as convirus-19)
Shortage on chips have been be the another factor for the high cost on pricing ,especially in the end of 2020,Huawei have purchased lots of chips from many suppplier,this leads to the shortage is much shortage for many consumer products,so many of the supplier rather purchasing it in higher price to keep the production run is normal.