The apparatus 3, wherein {HEAD ~ each} of the buffering members comprises a substrate contact portion contacting the substrate, and {TAIL ~ an impact absorbing portion} coupled to a lower portion of the substrate contact portion to absorb impact applied to the substrate contact portion 
The apparatus 3 , wherein { HEAD ~ each } of the buffering members comprises a substrate contact portion contacting the substrate , and { TAIL ~ an impact absorbing portion } coupled to a lower portion of the substrate contact portion to absorb impact applied to the substrate contact portion
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