① ① The approval of UL, the basic meaning of listing of UL.
UL was approved as the applicant of UL certificate. UL column is a UL celebrity.
② The authority difference between unapproved listing and UL listing.
Did UL approve it? The applicant is the owner of the UL file, which will not be displayed on the Internet, and most people can't find it.
UL listed companies are companies shown on the UL website, or companies that can be found by document numbers.
The difference between ULApproved and UL listed products certification methods.
UL certification and UL listing are both UL certified services. Only the authentication method is different.
Commercial differences between ULApproved and UL listing.
There can be more than one listed person, and the applicant must be a listed person. Your company can also add the name of your customer, so that the product can be branded with your company or your customer, instead of giving your customer an agency certificate.
Extended data
First, the significance of UL certification
UL is the abbreviation of Underwriter Laboratories Inc UL Safety Laboratory is the most authoritative institution in the United States and a large private institution engaged in safety testing and evaluation in the world. This is an independent, profit-making professional organization that conducts experiments for public safety.
It uses scientific testing methods to study and determine various materials, devices, products, equipment, buildings and so on. Whether it is harmful to life and property; Determine, compile and publish corresponding standards and materials that will help reduce and prevent the loss of life and property, and conduct fact-finding business at the same time.
Second, the basic introduction of UL certification services
(1) column name (listed)
Generally speaking, the list only applies to complete products and various devices and equipment replaced or installed by qualified personnel on site. All kinds of products listed by UL include: household appliances, medical equipment, computers, commercial equipment and various electrical products that play a role in buildings, such as power distribution systems, fuses, wires, switches and other electrical components. UL listed products can usually be marked with UL listing logo on each product.
2 recognized.
Certification service is a project in UL service, and its certified products can only be used as components and raw materials on UL listed, classified or other certified products. The approved product structure is incomplete, or there are certain restrictions on its use, which cannot guarantee the expected safety performance. In most cases, the tracking service of approved products belongs to category R.
③ Classification.
Grading service only evaluates the specific hazards of products, or evaluates products that implement standards other than UL standards (including internationally recognized standards such as IEC and ISO standards). Generally speaking, most classified products are not products used by consumers, but products used by industry or commerce. The classification mark in UL trademark indicates that the product has certain restrictions and prescribed scope when it is recognized by UL.
(4) Multiple listing, multiple accreditation or multiple grading services:
When the applicant of UL obtains the above-mentioned listing, approval or grading services, and its products are intended to be produced in the name of another company to meet the sales needs, it can apply for multiple listing, approval or grading services. In this case, the listed, approved or graded manufacturer is allowed to use the name of another company in the product catalogue.