[经] materials purchasing and stock budget

cái liào gòu mǎi yǔ cún chǔ yù suàn ㄘㄞˊ ㄌㄧㄠˋ ㄍㄡˋ ㄇㄞˇ ㄩˇ ㄘㄨㄣˊ ㄔㄨˇ ㄩˋ ㄙㄨㄢˋ