上海开展防疫物资产品质量大检查 - 2021年04月12日

The city witnessed a high qualification rate of epidemic prevention items in a three-month inspection campaign, Shanghai’s market regulators said on Friday.
A total of 75 batches of non-medical face masks were tested, with 94.7 percent up to standard, according to the Shanghai Administration for Market Regulation.
All six batches of non-woven fabrics used on face masks and all seven batches of masks for medical use checked passed quality tests, while 93 percent of 15 batches of air purifiers met the standard.