注意：输入证书号码，点击查询可获悉证书是否在有效期，查询结果为‘没有查询到相关结果’则表示证书过期或不属HCS认证范围。

Note: enter the certificate number and click query to know whether the certificate is valid or not. If the query result is "no relevant result found", it means that the certificate is expired or not within the scope of HCS certification.