Whether critical parts safety stock can move forward comes down to whether the models on sale and vehicles in operation can be verified, whether the failure frequency and repair impact are clear, and whether the supply lead time and substitute part availability can be put on file. Tier the parts by vehicles in operation, failure impact and replenishment lead time; critical down-vehicle parts and ordinary trim parts can't share the same stocking rule.
There is no universal unit count or month figure for safety stock; calculate it from the vehicles in operation, failure impact and replenishment lead time. For an example, see How should a dealer plan reorder timing for Chinese cars with long shipping cycles?. Car parts safety stock is ultimately governed by the local rules and written confirmations in force at the time of processing. If you need the models and export documents behind car parts safety stock re-checked, submit the checklist to Starvia Automotive for a further review by the China team.