批發業在現代供應鏈中扮演著非常重要的角色。供應商通常會透過批發商來進行大量采購和批貨，然後再將商品分銷到各個零售商處。產品批發不僅能夠提供更有競爭力的批發價，也能夠幫助供應商擴大市場規模，進而增加銷售量和利潤。因此，批發業不僅是貿易商和貿易代理的重要合作夥伴，也是整個供應鏈中不可或缺的一環。
Wholesale, Product Wholesale, Supplier
Title: The Importance of Wholesale Industry
Article: The wholesale industry plays a very important role in the modern supply chain. Suppliers usually conduct large-scale purchases and bulk purchases through wholesalers, and then distribute the goods to various retailers. Product wholesale not only provides more competitive wholesale prices, but also helps suppliers expand their market size, thereby increasing sales and profits. Therefore, the wholesale industry is not only an important partner for traders and trade agents, but also an indispensable part of the entire supply chain.
（本文章僅就題目要求進行撰寫，不代表任何觀點或意見）
