Can CCPIT invoice certification and certificate of origin be

Hello, Mr. Zheng, we are an import and export trade company in Jiaxing, Zhejiang Province. Our company has the right to import and export. Therefore, we can apply for certificate of origin by ourselves. Now our customers also require the invoice to be certified by the CCPIT, but the customer also requires to make the amount lower. However, we need to provide the customs declaration form to handle the invoice certification of CCPIT, so we are stuck here We can't do it. We want to issue it through an agent, but we can't find our local agent. If we find another agent, can we handle the invoice certification and certificate of origin of CCPIT in different places?