JINAN -- Japanese media visited Chinese export food factories and quality supervision institutions on Wednesday and Thursday as China sought mutual trust on the food trade after dumpling poisoning.

More than 20 reporters from nine Japanese news institutions visited three food factories exporting to Japan, including Qingdao Nine-alliance Group Co Ltd, Anqiu Foreign Trade Foods Co Ltd and Shandong Nicky Foods Co Ltd, and the provincial Technical Center for Inspection and Quarantine in east coastal Shandong province, a major food export province to Japan.

Supervision system, raw material bases and manufactory process are all open to the media.

"China wants to rebuilt the mutual trust in the food trade with Japan," said Jiang Zongliang, deputy director of Shandong Entry-Exit Inspection and Quarantine Bureau.

Influenced by the dumpling poisoning incident, the province's exports of food and farm products to Japan in February fell 60 percent year on year, according to official statistics.

"Chinese food exporting supervision system is strict," said Horike Maski, a reporter from TV Asahi.

Shandong is the largest food exporting province to Japan with an annual export of 2.85 billion US dollars in 2007, 34 percent of the nations' total food exports to Japan.