1、合格证英文:certificateofinspection/quality。
2、且均取得了国家指家的检验机构颁发的防爆合格证。Andachievedanationalhomeinspectionorganizationsthatexplosion-proofcertificateissued.
3、油漆材料必须有产品合格证及商检测试报告,并在有效期内使用。Paintmaterialmusthaveaproductcertificateandinspectiontestreport,andusedwithinthevalidityperiod.