宠物经济板块1月21日跌0.54%，回盛生物领跌，主力资金净流出2.12亿元

Group 1 - The pet economy sector experienced a decline of 0.54% on January 21, with Huisheng Biological leading the drop [1] - The Shanghai Composite Index closed at 4116.94, up 0.08%, while the Shenzhen Component Index closed at 14255.12, up 0.7% [1] - Key stocks in the pet economy sector showed varied performance, with Zhejiang Zhengte rising by 4.56% to a closing price of 56.22 [1] Group 2 - Huisheng Biological saw a significant drop of 6.19%, closing at 29.54, with a trading volume of 419,900 shares and a transaction value of 1.192 billion [2] - The pet economy sector experienced a net outflow of 212 million from main funds, while retail investors contributed a net inflow of 91.94 million [2] - The stock performance of various companies showed mixed results, with Qingmu Technology experiencing a net outflow of 46.44 million from main funds [3]