Safe sex might not actually be that safe, depending on where you get your condoms from. About 30 percent of imported condoms being sold in China have failed to meet quality checks, according to authorities.

China’s General Administration of Quality Supervision, Inspection and Quarantine did spot tests on 133 batches of imported condoms, and 43 (about 32.3 percent) of those batches failed to meet the country’s sanitation and condom quality checks.

The spot checks included 20 Entry-Exit Inspection and Quarantine Bureaus, covering port cities and cross border e-commerce areas.

The products that failed the tests come from six different countries, with the majority of the defective contraceptives  coming from Malaysia, Thailand and Japan. These products cover about 20 brands, including Okamoto, Jissbon, Elasun, One Topeak, and Prudence.

The administration said that substandard goods have been disposed of in accordance with the law, in order to effectively safeguard the legitimate rights and interests of consumers.

While imported condoms failed the strict quality control tests, domestically-produced sheaths have also been in the news for the wrong reasons. In 2015, People’s Daily reported that Shanghai police had seized nearly three million counterfeit condoms with a street value of 12 million yuan. They had been distributed in cities across eight provinces, and were found to be defective and in some cases, toxic.