The addendum has now been signed, giving ECA rights to the duty-free and tax-free import of services and materials and other related privileges that will allow the efficient and cost-effective implementation of the project.
这一增编现已签署，给予了非洲经委会免关税及免税进口服务和材料的权利以及其他相关的特权，从而可以高效和具有成本效益地执行该项目。