This paper presents a piezoelectric vibration energy harvester (PVEH) with resonance frequencies shifted down by elastically supported masses. The added elastic supporters can diminish the equivalent stiffness of the whole structure. leading to an evident decline in the resonance frequency of the cantilever body. Meantime. https://www.nacrack.com/super-save-2001-2004-LEXUS-LS430-Sedan-Rear-Bumper-Cover-w-o-Park-Assist-Paint-Code-3P2-hot-choice/