After being named and shamed as the online shopping site with the most fake goods in China, Alibaba's Taobao marketplace has stepped up to the challenge, accusing the State Administration for Industry and Commerce, one of the country's top watchdogs, of unfair treatment over ita random quality inspection.

Taobao, the largest customer-to-customer online marketplace, posted an article on Tuesday saying that the SAIC published a misleading report over a "problematic" random quality inspection.

The article, which is claimed to have been written by a Taobao employee, said that the quality inspectors sampled very few items and there is no logic to the report.

The report, which was released by the SAIC on Friday, said just over 50 percent of goods bought online are genuine and meet national quality standards.

Taobao marketplace was found to have the worst performance, with only 37.25 percent of its goods being genuine products, compared with 90 percent for JD.com and 85.71 percent for Tmall, a business-to-customer site of Alibaba.

The quality inspection was conducted between August and October. As many as 92 items from six online sites are chosen for the test, 51 of which were from Taobao.