毕即失效。本合同执行期间,双方不得随意变更和解除合同,合同如有未尽事宜,应由双方共同协商,作出补充规定,补充规定与本合同具有同等效力。本合同正本一式二份,定作方和承揽方各执一份;合同副本一式____份,交_______(如经签证或公证,则应送签证机关或公证机关)各留存一份。定作方:____________________(盖章)代表人:____________________(盖章)地址:________________________________电话:________________________________开户银行:____________________________帐号:_Р_____________________________承揽方:__________________________(盖章)代表人:__________________________(盖章)地址:_________________________电话:_________________________开户银行:_____________________帐号:_________________________一九_____年_______月______日订Р