update to the investigation from lab:
They found an significant deviation in amount of plasticizer (too less). That means that there is something wrong with the compound.
Currently it is unclear if the compound was destroyed during application (influence from heat, cleaning agents, etc,..) or if there was a deviation at compound production.
Lab will do a detailed analysis to find out the root cause. They expect to have the results available till 12.5.
Please do not forward this info to the customer.
Please just inform the customer about the delay, because we have to do an enhanced test in order to find out the root cause.