Construction tools can be categorized into six core groups based on their functions, covering the entire workflow from basic manual tasks to large-scale mechanized construction; the specific classifications are as follows:

The comprehensive R&D process for packaging materials encompasses a full closed-loop cycle—from requirement definition to mass production and iteration—balancing performance compliance, cost control, and application suitability, and is structured into six standardized stages.

Standards for plastic product grades are primarily categorized based on three core dimensions: material safety identification, fire resistance, and industry application specifications. These standards cover compliance requirements across the entire spectrum of use cases, ranging from everyday consumer applications to high-end industrial settings. The specific details are as follows: