MADISONVILLE MAYOR DAVID JACKSON WILL BE MAKING IT OFFICIAL TODAY WHEN HE SIGNS A SISTER CITY AGREEMENT WITH DIRECTOR GENERAL JIANG JIE OF DONGYING CITY, CHINA.  THE SIGNING WILL BE AT 4:30 THIS AFTERNOON.  THERE WILL ALSO BE A SIGNING CEREMONY WITH DAN WILLIAMS, PRESIDENT OF NAVITAS LAND AND MINERAL OF MADISONVILLE AND XIAO SHAOSONG, OF SHENGLI HIGHLAND PETROLEUM EQUIPMENT.