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It's so easy!: \1 q/ z- Y2 W& B: i
IPI: it's the first inspection before your shipment, don't ship any products with UL mark without finishing the IPI.1 e- K" a$ D u1 [6 [
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.
$ T7 Q# F3 R7 F9 L+ m0 N! v. QIIP: now it's changed to IMP(increased monitor program), it's an pulish procedure.
0 S: C4 p9 K5 [, d# w8 TVN: 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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