UL Introduction

UL is mainly engaged in product safety certification business safety certification business. Its ultimate goal is to obtain products with a fairly safe stard for the market contribute to the guarantee of personal health property safety. In terms of product safety certification as an effective means to eliminate technical barriers to international trade, UL also plays an active role in promoting the development of international trade.

UL was founded in 1894. In the initial stage, UL mainly relied on funds provided by the fire insurance department to maintain its operations. It was not until 1916 that UL was completely independent. After nearly a hundred years of development, UL has become a world-renowned certification body with a complete set of strict organization management system, stard development product certification procedures. UL is managed by a board of directors composed of representatives from safety experts, government officials, consumers, education, public utilities, insurance stards departments, the daily work is hled by the president vice president. Currently, UL has five laboratories in the United States, headquartered in Northbrook Town, north of Chicago, has established corresponding laboratories in Taiwan Hong Kong. In the United States, for consumers, UL is a symbol of safety marks. Globally, UL is one of the most trusted conity assessment providers for manufacturers.

UL logo style

UL logo is usually marked on the product (or) product packaging to indicate that the product has passed UL certification meets the requirements of safety stards.

Composition

The most important part of these marks is UL's graphic symbols, which are all registered trademarks of UL.

Requirements for the use of the UL mark

1. The minimum height of the registered trademark should be 3/64 inch.

2. When the outer diameter of the UL mark is less than 3/8 inch, the registered trademark symbol can be ignored if it is not clearly readable under naked eyes.

3. The mark can be directly fixed on the unchanging product by stamping, molding, ink printing, screen printing or similar methods.

4. Obtaining the logo: The manufacturer can reprint it or obtain it from a UL authorized distributor.

5. ULus mark (only us, no c): safety mark for products entering the US market; cUL (only c, no us): safety mark for products entering the Canadian market; cULus mark: products entering the US Canadian markets Safety signs of

Service items

UL's product certification testing services can be divided into listing, accreditation classification.

1. Column name (LISTED):

Generally speaking, listing is only applicable to complete products various devices devices replaced or installed by qualified personnel on site. Various products that belong to UL listing services include: household appliances, medical equipment, computers , Commercial equipment various electrical products that function in buildings, such as power distribution systems, fuses, wires, switches, other electrical components. Products listed by UL can usually be marked with UL's listing mark on each product. The usage of the listing mark.

2. Recognized:

The accreditation service is an item in the UL service, its certified products can only be used as components raw materials on UL listed, graded or other approved products. Approved products are incomplete in structure or have certain restrictions in use to ensure the expected safety perance. In most cases, tracking services for approved products fall into the R category. Approved products belonging to category L include electronic wire (AVLV2), processed wire (ZKLU2), wire harness (ZPFW2), aluminum wire (DVVR2), metal flexible tube (DXUZ2). Approved products require approval marks.

3. Classification:

The grading service only evaluates the specific hazards of products, or evaluates products that implement other stards (including internationally recognized stards, such as IEC ISO stards, etc.) other than UL stards. Generally speaking, most graded products are not products used by consumers, but products used in industry or commerce. The classification mark in the UL mark indicates that the product has certain restrictions specified scope when it is identified by UL. For example, for chemicals such as industrial solvents, only the range of fires that may occur when they reach their ignition temperature is evaluated. The grading service of some products is the same as the listing service, but generally only one aspect or several aspects of the product are evaluated. For example, in the United States, medical X-ray diagnostic equipment must comply with American laws related radiation emission beams throughout the country. Flow accuracy is stipulated, but because UL only regards X-ray as a classified product, it only evaluates its mechanical properties, electrical properties other non-radiation properties.

4. Multiple listings, multiple approvals or multiple classification services:

When a UL applicant obtains the above-mentioned listing, accreditation or grading services, its products must be produced in the name of another company to meet the needs of sales, can apply for multiple listings, multiple accreditation or multiple grading services In this case, the manufacturer that has been listed, approved or graded is allowed to use the name of another company in the product catalog, but the product has the company code, product code or other features deemed acceptable by UL. Must be consistent with the original listed, approved or classified product.

5. "AL"Listing, recognition or grading service

If the UL applicant does not want to obtain listing, recognition or grading services in the name of his own company, he can apply for listing, recognition or grading in the name of another firm (usually a retailer or wholesaler), namely " ;AL"Listing, recognition or grading services. It is different from multiple listings, multiple accreditations, or multiple grading services in that the applicant is not a listed person.

6. System certification service:

As a member of the International Accreditation Committee, UL has extensively involved in ISO9000 quality system certification, ISO14000 environmental protection certification, QS9000 automotive industry quality system certification AS9000 aircraft industry quality system certification services. A total of 116 factories in China have obtained UL system certification; 21 of them are ISO9001 certified, 85 are ISO9002 certified, 1 is ISO14001 certified, 9 are QS9000 certified.

7. Other UL services:

Such as certification services, inspection services, factual judgment services, research services, etc.

Process

The product application for UL mark includes the following steps:

1. The applicant submits relevant company product ination

Written application: You should request UL in writing to test your company’s products.

Company ination: Provide the detailed accurate name, address, contact person, postal code, telephone fax of the following units in both Chinese English.

(a). Applicant company: a company that submits an application for product testing is responsible for all engineering service costs

(b). Listed companies: companies listed in various product catalogs published by UL.

(c). Production plant: the manufacturer producer of the product.

Product ination: Product ination should be provided in English.

(a). Product name: Provide the full name of the product.

(b). Product mo: List all the product mos, varieties or classification numbers that need to be tested in detail.

(c). The intended use of the product: for example: homes, offices, factories, coal mines, ships, etc.

(d). Parts list: List the parts mos (classification number), ratings, manufacturer's name that make up the product in detail. For insulating materials, please provide the name of the raw material, for example: GE Polycarbonate, Lexan Type 104. When the part has obtained UL certification or approval, please prove the specific mo of the part indicate its UL file number (e). Electrical perance: For electronic electrical products. Provide electrical schematic diagram (circuit diagram), electrical perance table.

(f). Structural drawing: For most products, a structural drawing or exploded drawing of the product, a list of ingredients, etc. are required.

(g). Product photos, instructions for use, safety other items or installation instructions, etc.

 2. Make a decision based on the product ination provided

When the product ination is complete, UL’s engineers will make the following decisions based on the ination: the UL stards based on the experiment, the engineering cost of the test, the time of the test, the number of samples, etc., to notify you in writing, a al application And send the tracking service agreement to your company. The fee limit is indicated in the application , which is the maximum project cost estimated by UL based on the test items. Without your company’s written authorization, the fee limit cannot be exceeded.

3. Apply for company remittance, return application samples

The applicant signs the application the tracking service agreement, returns the to UL company. At the same time, the sample is sent by bank transfer at the post office or by express mail. Please make an appropriate response to the sample sent for inspection Deion (such as name, mo). Please send the application samples separately. For each application project, UL will assign a unique project number (Project No.) to indicate the project number the name of the application company when remittances, samples application s are sent to facilitate UL's inspection.

4. Product testing

After receiving the application , remittance, experimental samples signed by your company, UL will notify you of the completion time of the experimental plan. Product testing is generally carried out in UL laboratories in the United States, UL can also accept audited third-party test data. The experimental samples will be returned or destroyed according to your request.

If the product test results meet the requirements of UL stards, UL will issue a test report follow-up service procedures (FollowUp Service Procedure) test report will detail the test conditions, the indicators reached by the sample, the product structure the safety suitable for the use of the product Signs etc. The follow-up service rules include a deion of the product instructions for UL regional inspectors. A copy of the test report is sent to the applicant company, a copy of the tracking service rules is sent to each production factory.

5. The applicant is authorized to use the UL mark

The UL regional inspector in China contacts the production plant for the first factory inspection (Initial Production Inspection.IPI). The inspector checks your products their parts in the production line warehouse inventory to confirm the product structure Whether the parts are consistent with the tracking service rules, if required in the rules, the regional inspector will also conduct witness experiments. When the inspection results meet the requirements, the applicant is authorized to use the UL mark.

Following the IPI, inspectors will visit the factory from time to time to inspect the product structure conduct witness experiments. The frequency of inspection is determined by the product type production volume. Most types of products are inspected at least four times a year. The inspection is to ensure that the product continues to be consistent with UL requirements. Before you plan to change the product structure or components, please notify UL. For minor changes, there is no need to repeat any experiments. UL can quickly modify the tracking service rules to make inspections The staff can accept this change. When UL believes that product changes affect its safety perance, it needs to apply for the company to re-submit samples for necessary testing.

The cost of tracking services is not included in the cost of testing.

If the product test results cannot meet the UL stard requirements, UL will notify the applicant explain the existing problems. After the applicant improves the product design, the product can be re-inspected. You should tell the UL engineer what improvements have been made to the product in order to The decision above is to apply for UL