reserved copy meaning in English

保存本
保留本

Ask the bargainor provides reserved copy of lawful property right certificate above all , the authenticity that inquires property right card to room canal branch next and place buy origin of house property property right and property right record : include the house - owner , date that register , clinch a deal the price ; still need to affirm the integrality of bargainor property right in addition , what understanding buys a room to have mortgage , include furtive guaranty and mutual person to wait
首先要求卖方提供合法的产权证书正本，然后到房管部门查询产权证的真实性以及所购房产产权来源和产权记录：包括房主、登记日期、成交价格等；此外还需要确认卖方产权的完整性，了解所购房有没有抵押，包括私下抵押以及共有人等。