第一句：Who issues the inspection certificate in case the quality do not confirm to thecontract?
如果货物的质量与合同不符，由谁出具检验证明书呢?
A: Who issues the inspection certificate in case the quality do not confirm to the contract?
如果货物的质量与合同不符，由谁出具检验证明书呢?
B: The certificate will be issued by China Import and Export Commodity Inspection Bureau or by any of its branches.
检验证明书将由中国进出口商品检验局或其他分支机构出具。
A: That is authentic.
这个证明是可信的。
第二句：We offer all of our clients this inspection certificate.
我们为我们的客户提供的都是这种检验证明书。
A: We offer all of our clients this inspection certificate.
我们为我们的客户提供的都是这种检验证明书。
B: Who signs it?
这种检验证明书是由谁签署的?
A: The inspection certificates will be signed by the commissioner of the CommodityInspection Bureau.
检验证明书将由商检局局长签字。
其他表达法：
Our certificates are made valid by means of the official seal and personal chop of the commissioner.
我们的证明书以盖公章和局长签字为有效。
As a rule, our certificate is made out in Chinese and English.
通常证明书是用中文和英文开具的。（以上内容转自可可英语）