▁have ▁labels ▁that ▁are ▁required ▁by ▁law , ▁describing ▁the ▁contents ▁of ▁the ▁stuff ing . ▁ ▁Text iles ▁containing ▁p estic ides ▁as ▁an ▁ing red ient ▁may ▁also ▁require ▁government ▁appro val ▁and ▁comp uls ory ▁label ing . ▁In ▁the ▁USA , ▁for ▁example , ▁labels ▁have ▁to ▁state ▁the ▁p estic ide ▁registration ▁number , ▁statement ▁of ▁ing red ients , ▁storage ▁and ▁dispos al ▁information , ▁and ▁the ▁following ▁statement : ▁" It ▁is ▁a ▁viol ation ▁of ▁Federal ▁Law ▁to ▁use ▁this ▁product ▁in ▁a ▁manner ▁incons istent ▁with ▁its ▁label ing ”. ▁A ▁label ▁including ▁a ▁company ▁name ▁or ▁identification ▁number ▁and ▁a ▁material ▁content ▁list ▁may ▁also ▁be ▁required . ▁ ▁Mail ing ▁Mail ing ▁labels ▁identify ▁the ▁add res see , ▁the ▁sender ▁and ▁any ▁other ▁information ▁which ▁may ▁be ▁useful ▁in ▁trans it . ▁Many ▁software ▁packages ▁such ▁as ▁word ▁processor ▁and ▁contact ▁manager ▁programs ▁produce ▁standard ized ▁ma iling ▁labels ▁from ▁a ▁data ▁set ▁that ▁comp ly ▁with ▁postal ▁standards . ▁These ▁labels ▁may ▁also ▁include ▁routing ▁bar codes ▁and ▁special ▁handling ▁requirements ▁to ▁exped ite ▁delivery . ▁ ▁Special ized ▁labels ▁▁ ▁Not ebook ▁labels ▁are ▁mainly ▁used ▁for ▁ident ifying ▁the ▁owner ▁and ▁purpose ▁of ▁the ▁not ebook . ▁Some ▁information ▁on ▁a ▁label ▁may ▁include ▁name , ▁contents , ▁and ▁date ▁started . ▁P ig gy back ▁labels ▁are ▁made ▁from ▁combining ▁two ▁layers ▁of ▁ad hes ive ▁substr ate . ▁The ▁bottom ▁layer ▁forms ▁the ▁backing ▁for ▁the