The collision involving the anchored Liberia-flagged tanker A Symphony and the bulk vessel Sea Justice took place at 0850 local time (0050 GMT), A Symphony's manager Goodwood Ship Management said in an e-mail. BEIJING, April 27 (Reuters) - A tanker carrying around one million barrels of bitumen mix was involved in a collision near the Chinese port city of Qingdao during heavy fog, spilling oil into the Yellow Sea, Chinese maritime officials and tanker representatives said on Tuesday.