At NASK, we have transformed the way active ingredients are delivered. While conventional carriers often struggle with limited compatibility, rapid degradation, or the need for chemical preservatives, our electrospun nanofiber platform offers a fundamentally more elegant and versatile solution. We have created a delivery system that acts as a programmable reservoir—capable of encapsulating virtually any active molecule and releasing it with precise control, all without the use of preservatives. The Science of Controlled Release: Engineering the Matrix Our technology is built upon a deep understanding of polymer physics, nanofiber architecture, and molecular interactions. Using our proprietary electrospinning process, we create a three-dimensional nanofibrous matrix that serves as a protective and programmable carrier for a wide range of active ingredients. The key to our innovation lies in two interconnected mechanisms that allow us to precisely tune release kinetics: Molecular-Level Encapsulation and Compatibility Unlike traditional delivery systems that are limited by the chemical properties of the active ingredient, our platform is inherently versatile. We engineer the polymer matrix to accommodate: Small molecules, peptides, and proteins from low-molecular-weight compounds to complex biologics Hydrophilic and hydrophobic actives whether water-soluble or oil-based Positively and negatively charged molecules enabling us to work with ionic actives without charge-related instability This versatility is achieved through careful selection of polymer systems and precise control over the electrospinning environment. The active ingredient is uniformly distributed within the nanofiber matrix, where it is protected from environmental degradation without the need for chemical preservatives. Tunable Release Kinetics Through Structural and Compositional Design The release rate of the active ingredient is not a fixed property of our nanofiber—it is a parameter we can precisely engineer. We achieve this through two primary design levers: Structural Control By adjusting the nanofiber diameter, porosity, and nanofiber alignment during the electrospinning process, we can create diffusion pathways of varying complexity. Denser, smaller-diameter nanofibers slow release, while more porous structures facilitate faster release. Compositional Control We can select and blend polymers with specific degradation profiles and hydrophobic/hydrophilic characteristics. A hydrophobic matrix will release a hydrophilic active more slowly, while a hydrophilic matrix will release it more rapidly. By layering different polymer formulations, we can create multi-stage release profiles—for example, a burst release followed by sustained delivery. This dual control mechanism enables us to achieve release profiles ranging from immediate to sustained over days, weeks, or longer—all without relying on preservatives to maintain activity. Stability Without Preservatives: A Scientific Advantage One of the most significant innovations of our platform is its ability to maintain the bioactivity of sensitive ingredients—particularly peptides and proteins—without adding preservatives that can cause skin irritation or formulation instability. Our electrospinning process operates under mild, solvent-controlled conditions that preserve the secondary and tertiary structure of delicate biomolecules. Once encapsulated, the active ingredient is physically isolated from oxygen, moisture, and light within the nanofiber matrix. This protective microenvironment ensures long-term stability without the need for chemical preservatives, making our platform ideal for applications where safety and biocompatibility are paramount. A Platform for Innovation: Unlocking New Markets Our preservative-free,

At NASK, we have developed a groundbreaking antimicrobial nanofiber that redefines the standard for safety and efficacy. While the industry has long relied on leaching toxic metals like silver or copper ions to combat microbes, our technology takes a fundamentally different—and scientifically superior—approach. We have created a nanofiber that kills pathogens through physical and chemical interactions at the cellular level, without releasing any harmful substances into the environment or onto the user’s skin. The Science of the Kill: A Physical-Chemical Synergy The mechanism behind our technology is a testament to our commitment to deep scientific research. Unlike conventional antimicrobial materials that require the migration of heavy metal ions (which can pose risks to human health and the environment), our nanofibers are engineered with a unique molecular structure that achieves microbial inactivation through two synergistic pathways: Physical Disruption (The “Nano-Blade” Effect) Our electrospinning process produces nanofibers with precisely controlled surface topography. When a microorganism—whether a bacterium, fungus, or virus—comes into contact with our nanofiber, the nano-scale architecture physically disrupts its lipid envelope or cell membrane. This is a mechanical breach that the microbe cannot develop resistance against. Contact-Based Chemical Inactivation The polymer matrix of our nanofiber is functionalized with a safe, non-leaching active ingredient. Upon contact with the disrupted microbe, this chemistry irreversibly denatures the proteins and genetic material (DNA/RNA) inside, ensuring complete and permanent inactivation. This dual-action mechanism ensures a >99% kill rate against a wide spectrum of dangerous pathogens, including: Gram-positive bacteria: Methicillin-resistant Staphylococcus aureus (MRSA) Gram-negative bacteria: Legionella (the cause of Legionnaires’ disease) Fungi: Candida albicans Viruses: SARS-CoV-2 (COVID-19), H1N1, H3N2 Because the active ingredient is bound directly to the nanofiber and does not leach out, our material is inherently safe, non-toxic, and provides long-lasting protection without the environmental concerns associated with nano-silver or other metal-based biocides. Proven in the Field, Trusted by Leaders This isn’t just a lab-scale discovery. Our antimicrobial nanofiber has been successfully scaled and deployed in the real world. It is the core technology behind the first-ever nanofiber N95 respirator that actively kills viruses and bacteria. This innovation has earned the trust of the most demanding healthcare institutions globally. Our respirators have been used by top customers [including the Hospital Authority in Hong Kong and the World Health Organization (WHO) ], protecting frontline healthcare workers during critical times. A Platform for Global Health: Unlocking New Markets The potential applications for a safe, non-leaching, and highly effective antimicrobial nanofiber extend far beyond respirators. We are actively seeking partners to explore and commercialize this technology across multiple high-value sectors: Healthcare & Medical Antimicrobial surgical masks, gowns, drapes, and wound dressings that prevent secondary infections without cytotoxic side effects. Water & Air Filtration Filters that not only trap but actively kill Legionella, mold, and viruses, preventing the re-growth of harmful microbes in HVAC systems and water purification devices. Hygiene & Personal Care Sanitary napkins, adult diapers, and baby diapers that actively combat odor-causing bacteria and reduce the risk of dermatitis and urinary tract infections. Food Packaging Wraps and liners that extend shelf life by inhibiting the growth of spoilage organisms