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It's so easy!& t7 _+ j# N9 G% s2 D
IPI: it's the first inspection before your shipment, don't ship any products with UL mark without finishing the IPI.
6 {3 I" E4 }% i2 s* b Z% h7 S, PRegular 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.: Q; x! _) x( U8 N$ B# g6 I. u5 N
IIP: now it's changed to IMP(increased monitor program), it's an pulish procedure.+ g) s ^0 o' r7 ?: X
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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