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It's so easy!" D' [! j+ Z( j, o, l5 f. ^
IPI: it's the first inspection before your shipment, don't ship any products with UL mark without finishing the IPI. e; v: A' E" @ l4 M( b( |
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 x. P5 k: ?/ l- o
IIP: now it's changed to IMP(increased monitor program), it's an pulish procedure.; [* l+ U2 v/ U
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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