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It's so easy!$ x/ q7 C# s: i: b* d
IPI: it's the first inspection before your shipment, don't ship any products with UL mark without finishing the IPI.
@* g$ a3 I; G% eRegular 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.
4 M( [) [; s) J2 q( ?IIP: now it's changed to IMP(increased monitor program), it's an pulish procedure.
1 P6 y2 \3 A! M: z m% mVN: 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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