Chinanews client February 25th (Ren Siyu) On the 25th, Tang Jun, deputy director of the State Administration of Market Supervision and Administration, introduced at the press conference that in terms of price protection, the market supervision department promptly investigated and punished the behavior of raising mask prices. More than 4,500 companies were investigated; more than 11,000 other medical protection supplies and important commodities related to people's livelihood were being registered. At the same time, enterprises are also taking action consciously. According to preliminary understanding, the e-commerce platforms participating in the action have offlined more than 200,000 masks and involved more than 36,000 stores in the face of abnormal prices on mask products.