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FortheeconomicperformanceoftheShjhzhenRllhhprF3ctoryinROngcheng,ShandongleadsitscounterpartsinthecountryThefactorywasthefirsttoproducesixldndsofhighspeedsedancarmeridiantires,whichare30percenthigherinmileage,and7to11percenthigherinoilsavingthanordina...