WEBbāo tuì huàn. to guarantee refund or replacement (of faulty or unsatisfactory goods) ( 包退换 ) EXAMPLE SENTENCES. 产品不合规格,保证 退换 。. Replacement is guaranteed if the products are not up to the standard.; We undertake to replace the specifications. 药品售出,概不 退换 。. Once medicines leave the store they ...