ZQ Company Joint Procurement Optimization Research

In recent years,with the homogenization of manufacturing costs in the automotive industry,more and more vehicle manufacturers are aware of the importance of replenishment in production.Replenishment is a very important part of a company,especially for enterprises with large demand and fragmentation,the replenishment cost accounts for a large proportion of the total production cost of the enterprise.If there is a replenishment model suitable for itself,it will be for the enterprise.There is a difference in profit.However,many enterprises,especially old state-owned enterprises,have a large number of procurement personnel and a chaotic procurement system,which brings great costs to the company.How to find a procurement model that suits the company itself is a key issue that companies need to pay attention to.At the same time,many companies are aware of the implementation of joint replenishment,which can effectively reduce the number of orders and obtain considerable price discounts,which greatly reduces the replenishment cost of enterprises.Therefore,how to adopt a joint replenishment model reasonably and scientifically within the enterprise is a problem that many enterprises value.ZQ is a state-owned heavy-duty truck manufacturing company with a commonality with many old-fashioned car production companies.Taking ZQ as an example,this paper carried out a series of researches on its subsidiaries in the automobile industry park of J City.After investigation,it was found that some problems exposed by ZQ in the actual procurement process mainly include the high unit price of replenishment goods and the occurrence of out-of-stock products of high-frequency products.The system analyzes the causes of these two problems,namely,not enjoying the price discounts that are due,the supplier's limited supply capacity,and certain defects in the products.For these reasons,a joint replenishment plan that considers out-of-stocks and quantity discounts is proposed.According to the above scheme,combined with the field research,the author has identified 11 standard parts and components that ZQ company branches need to replenish,and selected the most representative 7 parts for joint replenishment according to actual conditions.The test,using the differential evolution algorithm to solve,and finally the traditional replenishment model to compare,found that it can effectively reduce costs.Then according to the actual situation of the enterprise,the sensitivity analysis of the fixed order cost is carried out,and it is found that as the fixed cost increases,the saved profit is reduced.The practical problems and corresponding solutions proposed in this paper not only have guiding significance for ZQ,but also have reference value for many domestic enterprises of the same type,which can help enterprises effectively reduce costs and improve production efficiency.