China News Service Client (Zuo Yukun) reported on April 5th that some countries said that some medical materials such as masks purchased from China had quality problems. Jiang Fan, a first-level inspector of the Foreign Trade Department of the Ministry of Commerce, said at the press conference on the 5th that the relevant reports did not objectively reflect the full picture of the facts. Some media completely blamed China's product quality but the fact that there were many reasons. The quality standards are different, there are differences in usage habits, and even user improper operation can cause some quality doubts. For example, in the previous stage, a batch of non-medical masks for personal protection that China exported to the Netherlands was distributed to local hospitals. On the evening of April 3, the Dutch Minister of Health tweeted that the quality of a new batch of Chinese masks conformed to official Dutch standards and had been approved for distribution.