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It's so easy!
& o' v1 [0 w \- O* `& VIPI: it's the first inspection before your shipment, don't ship any products with UL mark without finishing the IPI.6 b5 @4 |, @- j- p6 ~2 l X
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.
5 e" Q$ }) [) K7 D: DIIP: now it's changed to IMP(increased monitor program), it's an pulish procedure.5 }: c8 n" Z* R: [- o" U0 u
VN: 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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