BEIJING (AP) — The chairman of a troubled Chinese solar panel manufacturer has denied wrongdoing and blamed short-selling by hedge funds for a plunge in the price of its Hong Kong-traded shares.Hanergy Thin Film Power Group Ltd. is cooperating with an investigation by Hong Kong regulators following the May 20 suspension in trading of its shares, chairman Li Hejun said in comments released Tuesday by its Chinese parent company. He urged investigators to finish their work as soon as possible.Trading in Hanergy shares in Hong Kong was suspended after their price fell by nearly half, wiping $19 billion off its...