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It's so easy!
3 \0 D% g) y* z+ C4 g4 h) c5 IIPI: it's the first inspection before your shipment, don't ship any products with UL mark without finishing the IPI.( W+ G% @+ r3 y( u
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.
- J0 `7 ~; l% z; E1 T7 eIIP: now it's changed to IMP(increased monitor program), it's an pulish procedure. Y9 G ^7 F( [7 }+ V3 l
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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