Over 1,700 kinds of uncertified auto parts have been found in two Toyota stores in Yiwu City, east China's Zhejiang Province, local authorities said Wednesday.

The parts were found on March 18 in the warehouses of two dealerships belonging to FAW Toyota Motor Sales Co Ltd, a Sino-Japanese joint venture, according to the Zhejiang Provincial Administration for Industry and Commerce.

The spare parts did not have qualification certificates and inspection reports.

Under Chinese law, goods without the certification are not legitimate and may not be sold in the market, said Pan Wei, an official with the administration.

The parts have been traced back to Toyota Motor Warehousing & Trading Co, a Shanghai-based Toyota subsidiary in charge of distributing auto parts to Toyota stores in China, he added

Most auto parts found in the warehouse of the company did not have certificates, either, Pan said.