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It's so easy!* M ` Y( P6 o2 @- l
IPI: it's the first inspection before your shipment, don't ship any products with UL mark without finishing the IPI.
: n+ V, B% O/ |4 F3 n ]9 [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.
" P8 R# I( u8 d9 Y/ @; FIIP: now it's changed to IMP(increased monitor program), it's an pulish procedure.( v" L/ \, y2 F9 `& _. x* q0 Q/ m
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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