What is the proportion of general enterprise logistics expenditure to turnover?

The initial large-scale purchase is not counted, and the later maintenance should not exceed 3%. Except those who buy new products. I don't count the salary of the logistics staff here, only the maintenance of the goods. In fact, 1% is not used after maintenance (in general, if the product can't be sold, of course, the proportion is unreasonable), and large companies will not exceed 1%, so there is no standard for the specific dosage! A good company implements 6S management with little maintenance fee. Think about Huawei 10% R&D investment, which is high in technology companies.