1 This Lease shall come into force upon the affixation of the company chop and the signature of the authorized represent本合同自签订之日起生效，合同文本一式二份，甲、乙双方各执一份。
The affixation is not to be taken as a document normality issue, but to be dealt with in the light of expert witness sys不能把上述论题只当作鉴定文书格式的问题，应从鉴定人制度改革、鉴定权的合理配置以及鉴定结论的采纳采信等方面来把握。