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It's so easy!! G' h! v% C+ Z
IPI: it's the first inspection before your shipment, don't ship any products with UL mark without finishing the IPI.4 f. Y" k& l& }& O1 F
Regular inspection: after the IPI, normally, for R file, there will be four times follow up inspection per year for UL, but for L file, it depends on the output of your products. Y5 c1 v2 k: ^% t
IIP: now it's changed to IMP(increased monitor program), it's an pulish procedure.
7 Z6 _1 o \$ d" i2 Z( SVN: variation notice/finding, if found, the UL auditor will issue VN, mayby hold-shippment is required, now UL will fine the factory for the VN. |
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