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It's so easy!3 q( v+ F- w& J
IPI: it's the first inspection before your shipment, don't ship any products with UL mark without finishing the IPI.
# j2 [% m2 U v: C6 s; n& m8 e' q! W& f- {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.
2 Y: k! `4 Q. k/ ZIIP: now it's changed to IMP(increased monitor program), it's an pulish procedure.
3 h7 y+ v; g1 O5 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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