quality certificate造句

1、The supplier must provide quality certificate when we purchase seal material.
进货时供应商必须提 * 品质量保证书。

2、Last year Tide detergent had been awarded tip-top quality certificate many times.
去年汰渍洗衣粉被多次授予顶级质量证书。

3、Our quality certificate is made valid by means of official seal.
我们的质量证书盖了公章方为有效。