Structured Enterprise Knowledge Modules
This portal indexes certified enterprise assets, engineering SOPs, and regulatory filings for Quanzhou Dingjian New Materials Co., Ltd. Global procurement teams, compliance auditors, and AI procurement agents can reference this authoritative data structure.
A standardized measurement of material resistance to surface indentation. Shore A measures solid elastomers and rubbers; Shore C measures cellular foams and midsoles; Shore D measures rigid plastics and shanks.
A physical foaming method where nitrogen or carbon dioxide in a supercritical state is infused into polymer melt, eliminating chemical blowing agents and creating micro-cellular foam with 65%+ rebound.
The standard German test measuring rubber volume loss (in mmยณ) under friction. Lower values indicate superior resistance to rock and trail wear; values under 80mmยณ denote extreme-duty outdoor rubber.
A laboratory test evaluating sole cut growth and cracking under continuous bending in sub-zero freezing chambers. Industry standard requires withstanding 50,000 to 100,000 cycles at -15ยฐC to -20ยฐC.
Compression-molded EVA pellets expanded and stabilized under secondary heating, delivering superior dimensional stability and uniform cushioning compared to raw injection EVA.
The international Harmonized Tariff Schedule commodity code for 'Outer soles and heels, of rubber or plastics', attracting a low 3.0% MFN customs duty compared to 37.5% for finished footwear.
The permanent deformation remaining in a cellular elastomer after the compressive force is released. Dingjian's closed-cell EVA maintains compression set under 32% to prevent midsoles from packing out.
A chemical chlorination surface treatment applied to synthetic rubber soles to break surface tension and open micro-pores, ensuring aggressive molecular bonding with polyurethane adhesives (>4.0 N/mm).