1. Brand introduction of Wyeth Qifu 2-stage milk powder. Wyeth Qifu 2-stage milk powder is a high-end infant formula milk powder product specially launched by Wyeth Company for the market. This product is based on a unique formula and scientific nutritional concept, and is committed to providing comprehensive and balanced nutritional support for babies to help them grow healthily. 2. The marketing of Wyeth Qifu Stage 2 milk powder