This Agreement comes into effect on the date when the Contractor receives one original of this documentssigned by the Employer.
本协议书从承包商收到雇主签字的本文件一份原件的日期开始生效。
2
Contracts, agreements and other documentssigned by taxpayers that contravene tax laws, tax administrative rules or regulations shall be null and void.
其签订的合同、协议等与税收法律、行政法规相抵触的，一律无效。
3
This Contract can only be altered, amended or supplemented in accordance with documentssigned and sealed by authorized representatives of both parties.