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It's so easy!/ [5 N! {& e) k% t6 j1 A
IPI: it's the first inspection before your shipment, don't ship any products with UL mark without finishing the IPI.
* W1 H, d2 u# u% ~. o/ [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.
* ]" f0 Q, t& {0 `: {+ T2 g. wIIP: now it's changed to IMP(increased monitor program), it's an pulish procedure.
* j& ^4 q" q0 B# a2 Z% l2 z5 XVN: 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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