... . PATENT 20072011046.4 HAVE BEEN JUDGED FAIL,THE LIE HAVE PENETRATED.SINCE 1985,THE FIRST TYRE WARMER IS INVENTED IN JAPAN,PATENT NO ... performance and quality,honest we are not the inventor of tyre warmer,because we know the history,we know something can not lie ... ,anyone can produce and sale tyre warmer in China if the quality is good enough.PRO-TECH TYRE WARMER IS GOOD ENOUGH,NOT ...