Group 1 - The company, Puyang Huicheng (300481), has a diverse range of products that are widely used in various fields including electronic component packaging materials, electrical equipment insulation materials, wind power, composite materials, and coatings [1] - The functional material intermediates produced by the company are primarily utilized in the field of organic optoelectronic materials [1]

Group 1 - The core viewpoint of the article is that Tai Rui Machinery (603289.SH) currently does not have direct customer cases primarily focused on "electronic component packaging" [1] - The company is a manufacturer and solution provider of plastic injection and metal die-casting equipment [1] - Main products include injection molding machines and die-casting machines, which are primarily applied in key industries such as new energy vehicles, packaging, consumer electronics, logistics, home appliances, and building materials [1]