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It's so easy!! L9 E/ f& Y6 ^3 ~
IPI: it's the first inspection before your shipment, don't ship any products with UL mark without finishing the IPI. s$ o1 m$ Z, [2 Q! d2 W8 K4 g
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.
7 t& }! T& w) G! \& L9 e1 DIIP: now it's changed to IMP(increased monitor program), it's an pulish procedure.
( b; g2 r: ?: n$ [9 _4 m9 L. L% AVN: 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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