GB/T 16656.55-2010

This standard defines data structures for representing procedural and hybrid models of product geometry, combining explicit shape definitions with construction history and feature-based operations. It is applied in computer-aided design (CAD) and product lifecycle management (PLM) systems to enable the exchange of parametric, feature-based, and hybrid product data across different software platforms in manufacturing industries. The standard supports interoperability in collaborative design, engineering analysis, and manufacturing planning by preserving the design intent and modification history of complex mechanical parts.