gree altairnano dolphin bus showed up in weihai in shandong province in recent days, dressed in “sea blue”. running under the blue sky, the dolphin bus appeared to be a dolphin leaping up from the deep blue sea, instantly becoming a flowing scenery in weihai. the dolphin bus also helps to promote the construction and improvement of urban traffic system, boosting the development of “waste-free city” and creating a “boutique city--happy weihai”