In many international projects, the contractor can increase income amounted to 10% to 20% of the project cost through the success of projects claim.

• 许多国际工程项目，承包人通过成功的索赔能使工程收人增加额达到工程造价的10%25一20%25，有些工程的索赔额甚至超过了合同额本身。