商务邀请函模板2021-条据书信 to * attention: * a formal visa invitation dear sir or madam: we are very pleased to invite mr. * * come to our factory for visiting and business negotiation. the business trip will start from *th april* . and because the long business co-operation in future between *对方公司名 and us， they will come to china for many times. please note， however， that we dont assume any legal or financial responsibility whatever regarding th
