LTA上算parf rebate就是直接按照车的OMV 乘以一个系数，比如7-8年就是剩下60%。
但是sgcarmart的公式不一样。。如果OMV高于20k， ARF比OMV要高的。。。
Calculation for ARF:
1. For cars with OMV below $20K:
OMV - VES rebates = ARF
2. For cars with OMV between $20k-$50k:
[{OMV - 20000} x 140%] + 20000 = X
X - VES rebate = ARF
3. For cars with OMV above $50k:
[{OMV-50000} x 180%] + 62000 = X
X - VES rebate = ARF
哪位知道的来解释下呢？