至和网 is an online resource platform for engineers, designers, students, and others seeking technical design materials. Its library offers downloadable 3D models and drawings, mechanical CAD files, fixture and mold designs, architectural plans, and other engineering resources. Materials span categories including machinery, general mechanical components, transportation, electrical systems, construction, fire protection, and everyday products.

The site features both free resources and curated recommendations, with examples ranging from equipment and automation concepts to vehicle components, manufacturing fixtures, and building designs. It also provides design tools, engineering references, and technical information intended to support design work and improve industrial design efficiency. Users can browse recent uploads, specialist collections, and foundational mechanical design materials, as well as read industry news and practical articles. The platform encourages users to share drawings and highlights opportunities to earn from shared contributions. Support resources include a help center, upload guidance, contact information, and assistance with converting incompatible model formats. Overall, 至和网 serves as a broad online library and community for accessing and sharing engineering design resources.