Which is better, Yeung Yi, Feiyue or Sheng Da?

Hello, Great Sage. Because Sheng Da is an old brand with good quality, it adopts streamlined design concept and imported technology for its parts. Although the products of Feiyue and Yeung Yi also adopt streamlined design concept, the manufacturing technology adopted is relatively backward, so Sheng Da is good. Zhejiang Shengda Stationery Co., Ltd., founded in 1995, is a toy enterprise integrating independent research and development, production and sales of products. It has jurisdiction over Shanghai Sheng Da Trading Co., Ltd. and Jinhua Sheng Da Toys Co., Ltd., and the company is headquartered in Yiwu, a small commodity city. Positioning the product as "hands-on, brain-thinking, thinking and creation", adhering to the business philosophy of "let wisdom grow in happiness" and serving the majority of children.