Test or certification item 测试或认证名称: 隔音效果
Norm refer 涉及法规: GB/T 50121
Refer products 涉及产品: 建材
Lead time 周期: 常规服务 regular service 10 工作日 working days ( URGENT service, to be /confirm/i, 加急服务待定 )
Sample size 送样规格: on request 待定
Others 其他信息:
Sample report 样本报告:
Photo for reference 涉及图片: