... penetrated. PATENT 20072011046.4 HAVE BEEN JUDGED FAIL,THE LIE HAVE PENETRATED.SINCE 1985,THE FIRST TYRE WARMER IS INVENTED ... .ANYONE SAID HE INVENTED TYRE WARMER IN CHINA IS A LIE.PRO-TECH are only absorbed in tyre warmer performance and ... ,because we know the history,we know something can not lie.And the patent JP 58-212041 is more than 10 ...