Technology Introduction

Grand-Silicagen Technology Co., Ltd. is a Taiwan–Japan joint venture advanced materials company, bringing together the industrial strength of Grand-Bonanza (Taiwan) and Silicagen (Japan) . The company is dedicated to the global deployment of next-generation PFAS-free silica-based materials, addressing the growing demand for material solutions that balance performance, safety, regulatory compliance, and long-term environmental sustainability.
At the core of Grand-Silicagen’s technology platform is Choetsu Technology®, an original Japanese silica coating innovation developed with a clear focus on material safety, environmental compatibility, and scalable industrial application. Built upon a mature and stable technical foundation, this technology enables high functional performance across diverse industries while reducing potential risks to both human health and the environment. It represents a practical response to global trends in de-plasticization, regulatory tightening, and ESG-driven material transformation.

Choetsu Technology® was originally invented in 1997 and has been continuously researched, refined, and technically advanced for more than two decades. As a Japan-origin, Japan-invented, and Japan-engineered technology, it has been developed under rigorous standards of safety, reliability, and long-term environmental responsibility.
Serving as the technological foundation of Silicagen’s proprietary silica coating system, Choetsu Technology® has undergone extensive real-world application and commercial validation within the Japanese market. Its long-term use across multiple material types and industrial scenarios demonstrates not only technical stability and durability, but also sustained industrial value and readiness for broader global deployment.

Choetsu Technology® operates through a highly controlled surface reaction mechanism that forms an ultra-thin, glass-like silica film directly on material surfaces. The coating reacts with OH groups (derived from moisture or humidity) present in air or on the substrate, enabling the reaction to proceed under near-ambient temperature and pressure conditions.
This process does not require strong acids, harsh chemicals, or extreme processing environments. Through this gentle yet highly efficient mechanism, a uniform and durable silica layer is formed directly on the substrate surface. The result is stable, long-lasting functional performance while maintaining excellent material compatibility and process safety.

From both chemical and biological perspectives, the silica coating produced through Choetsu Technology® is designed with safety and environmental responsibility as fundamental principles. The resulting coating is chemically neutral, free from PFAS and other substances harmful to living organisms, and safe for applications involving direct human contact.
At the end of its service life, the material is capable of gradual natural decomposition, ensuring that it does not create long-term environmental burden. These characteristics allow the technology to meet increasingly stringent regulatory and ESG requirements, while remaining fundamentally aligned with the long-term protection of human health and the natural environment.

By eliminating reliance on fluorinated chemicals and enabling functional performance through silica-based chemistry, Choetsu Technology® delivers meaningful sustainability without compromising industrial practicality. The technology actively supports plastic reduction and de-plasticization strategies, facilitates SDGs and ESG compliance across industries, and provides scalable, commercially viable sustainability solutions.
Through the cross-border platform established by Grand-Silicagen, this proven Japanese technology is now accelerating toward global industrial adoption, bridging advanced material science with measurable, real-world sustainability impact.