潍坊市是全国重要的塑料制品供应基地之一，具有成熟的供应链和丰富的生产经验。以昌乐县为例，塑料加工产业已发展到146家，从业人员8700人，年产塑料制品26万吨，年销售收入36亿元，年创汇1亿美元，产品发展为“袋、管、膜、板”四大系列、300多个品种，出口欧美等40多个国家和地区，成为昌乐县的特色优势支柱产业。

    Weifang City is one of the important plastic product supply bases in the country, with a mature supply chain and rich production experience. Taking Changle County as an example, the plastic processing industry has developed to 146 companies with 8,700 employees, with an annual output of 260,000 tons of plastic products, annual sales revenue of 3.6 billion yuan, and annual foreign exchange earnings of US$100 million. The products have developed into "bags, tubes, There are four series and more than 300 varieties of "membrane and board", which are exported to more than 40 countries and regions including Europe and the United States, becoming the characteristic and advantageous pillar industry of Changle County.