Unapproved Supplier List (USL) - The Unapproved Supplier List (USL) contains suppliers that IBM has decided not to buy goods or services for important business reasons.

• 未经批准的供应商名单（USL）中-未经批准供应商名单（USL）中包含了IBM已经决定不买的重要原因，企业商品或服务供应商。