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It's so easy!
( c3 f6 S) N. @$ G2 DIPI: it's the first inspection before your shipment, don't ship any products with UL mark without finishing the IPI.7 o, w. r7 C8 L" \' Z. _6 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.+ s7 o, y) d% O
IIP: now it's changed to IMP(increased monitor program), it's an pulish procedure.
- `& f; L& s X! n. W0 s" qVN: 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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