The vests will not protect drivers from head wounds, but data shows that the vast majority of attacks stem from knife attacks or gunshots to the drivers' lower back or side.
The test results indicated that straight knife chopper has higher chopping capacity, higher yield of small or fine particles and lower energy consumption than other two choppers.
试验结果表明，直刃刀对青棉秆的一次切碎，能获得细小颗粒产量高、能耗低的满意效果。
3
Eight elements interlink knife is base on the Shape and impression eight element, practice this a lot can improve the nimble of the body, the strength of lower limbs.