UL certification, factory inspection

In the first UL certified products before shipment, to go through the UL authorized by the local provincial China Import and Export Commodity Inspection Bureau ( CCIB ) sent to the factory for the UL certification inspection. A year to track inspection.
In general, UL certification for production system requirements are not too high, only once a year on equipment measurement, keep the factory's own inspection records, as well as substandard goods have some control methods. During the inspection, the site representative ( UL certification inspector) will mainly concentrate on the product itself, they will be based on the basis of inspection to check the product structure, components and assembly. For related to product safety parts, general rules will specify requirements for the UL certified products, and will specify the manufacturer and model; the shell, cover, injection molded parts, general rules specified in its raw materials and size requirements. Site representative will check the above as well as the rules specified in the UL certification mark.
In addition, if rules or FUII or standard requirements for product testing, site representative will ask the factory inspector with corresponding to the test, and field representative ones witness. If the rules also require samples to the UL tracking test, factory should cooperate with the production of the corresponding samples by inspector inspector, write the sample label, provide the address and sealing samples, by the factory sent to the corresponding UL laboratory. If the factory produced products in full compliance with the UL corresponding inspection standards, nor is there any other violation of tracking service agreement place, inspector will issue tracking inspection report ( Inspection Report ); factory representative in the confirmation of its content is accurate in reporting should sign a test is completed. If the inspection process and inspection standard appeared in non-compliance, inspector will produce change notice ( Variation Notice ), and according to the specific circumstances, take corresponding measures. For unauthorized use of UL product certification mark, the inspector will require the removal of UL certification mark; for the product does not comply with the requirements of UL certification, factory inspector will in removal of UL markers or reworked to make it meet the requirement; if the factory to the processing opinion did not agree, can be temporarily retained UL certification mark, but must stop shipments, the inspector will to notify the corresponding laboratory, responded by UL can decide whether or not to retain the UL certification mark; if only some small problems, does not affect the safety of the product, the inspector will make a provisional acceptance decisions, and reported to the appropriate laboratory; if it is obvious the standard error, such as typing errors or unit error, it does not affect the factory product eligibility, but as an UL document processing, the inspector will issue a notification of change. In general, unless UL is the responsibility of the company, the inspector will ask the factory to do not conform to the corresponding to the laboratory to explain, UL certification according to your explanation to make corresponding responses. Of course, the inspector's judgment is only temporary, the final decision in the course of the UL certification labs. If the factory inspection method has not agreed to place, to reflect the corresponding laboratory, at this time, the inspector has the obligation to provide the corresponding contact and connection method. In the confirmation notice of change of the recorded content is correct, the factory representative shall sign on the notice.
UL certification for factory to implement tracking inspection frequency are clearly defined
The R service under normal circumstances, for most of the R class factories, inspector visit frequency is four times per year, but does not exclude the possibility of a quarter of two, unless there are special instruction, a total of not more than four times. If the inspection when the product does not comply with the UL requirements and the need to rework, UL inspector will one additional testing to confirm the shipment of products have been reworked, and in accordance with the UL certification requirements.
For On-Call services, is at least once a year
QMFZ2, QMFZ3-Plastics ( plastic ) once every quarter until all UL certification laboratory need tracking test sample. WPYR2-Special-UseSwitches ( special use switch ), shown in the table below: quarterly production UL the biggest quarter times of inspection
0-250001
25000-1000002
100000-2500003
250000-5000004
500000-7500006
750000-100000010
1000000-125000011
1250000-250000012
2500000-20
There are many products, only the minimum number of test times, such as labels, printed materials and other products, only once a year, not more than two times a year.
L services
For class L factory, the inspection frequency depends on the UL tag number ( usually and the yield of the product directly proportional) and the complexity of the products. UL stipulates the need for a test of the product quantity, but also provides the largest number of each quarter inspection.
If the lamp of each of the 3200 inspection once every quarter, a limit of up to 18, that is to say, even if the factory when the quarter production by greater than 3200 x 18 = 57600 products, the inspection frequency still for 18 times. For your products, you can for your factory UL site representative or contact us, obtaining a desired number of products inspection.