North America
Europe
Denmark
France
Germany
Italy
Netherlands
Poland
Spain
Sweden
Switzerland
U.K.
Latin America
Asia Pacific
Argentina
Brazil
Mexico
Australia
India
Malaysia
New Zealand
Thailand
Hong Kong
Singapore
这项研究旨在探索和深入了解人们对自己生产或购买的产品的认识和感受、这种认识和感受对国际贸易产生的作用,以及其对产品设计、制造、销售和交付等方面产生的影响。
more
让 UL 引以为豪的是与公众分享New Science。通过在四大初始领域内进行根本探索并测试方法、软件和标准,新科技带来的创新成果向我们展示了让世界变得更安全的重要方式。
more
业务部门
行业

UL 是一家独立的从事安全科学事业的全球化公司,主要为五大战略业务领域提供专业服务。

我们为客户提供跨行业的专业服务,帮助其在全球市场取得成功。

标准目录
理解标准
参与

通过关键词或过滤功能按批准日期或发布日期搜索标准和纲要。

开始搜索

了解 UL 标准如何作为衡量和判断基准,让消费者和企业对其购买的产品和服务充满信心。

了解更多

UL 一直在寻求工业、学术和终端用户领域的专家,以协助我们制定共识性标准。

加入 UL

Share

Questions about installed products

UL has a wide range of resources to help code authorities approve installations of unlabeled products in the field, and to address other product safety concerns.

Unlabeled equipment

Our field engineering services provide timely solutions for situations where code authorities need technical assistance to approve the installation of equipment that does not bear a UL Mark. We work closely with the code authority and other parties to make sure our investigation address their questions and concerns. Most investigations can be scheduled within a few days.

  • Field evaluations can be requested by anyone to evaluate the acceptability of unlabeled equipment. A very popular service that building owners and contractors frequently use to quickly address the code authorities' concerns. 
  • Field inspections cover situations where the unlabeled equipment is eligible to bear a UL Mark, but the Mark was not applied in the factory, or was removed or made illegible. Only the manufacturer can request a field inspection.  
  • Field modifications can be an issue for code authorities because the product may not continue to meet applicable requirements.     

Reporting concerns with UL Certified products

UL actively addresses concerns about UL certified products. These include situations involving fire, shock, injury or property damage; misuse or misrepresentation of the UL Mark; and unauthorized or counterfeit UL Marks. 

Product recalls

Government agencies such as the U.S. Consumer Product Safety Commission (CPSC) recall products that represent safety risks, are defective or violate Federal standards. UL works cooperatively with these agencies to address product safety concerns related to products covered by our Standards for Safety.

Additional resources