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It's so easy!
4 k. M; C8 A9 L. oIPI: it's the first inspection before your shipment, don't ship any products with UL mark without finishing the IPI.$ C; ?) g6 E0 z( |. M
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.
# S4 Q0 `8 e" ` t: V2 g+ [* W: qIIP: now it's changed to IMP(increased monitor program), it's an pulish procedure.7 W" e+ j0 z& Z+ r, W
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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