The vegan silk series of muriersilk adopts patented microbial fermentation technology. Silk protein is synthesized by yeast, and the content of bio-based polymers reaches 95.7% (ISO 16620 certified). According to the 2025 audit by the International Vegan Association (IVA), water savings per square meter of production are 87% (compared to traditional mulberry silk), the carbon footprint is only 3.2kg CO₂-eq (24kg of standard mulberry silk), it has obtained the PETA cruelt-free certification and the Vegan Action trademark authorization, and the survival rate of silkworm pupae in the global supply chain is guaranteed to be 100%.
The material properties have been tested by TUV Rheinland of Germany. The tensile strength of the vegan silk is 4.1cN/dtex (the standard for 6A grade mulberry silk is 4.3cN/dtex), and the moisture permeability is 15,200g/m²/24h (the difference is <0.5%). A blind test conducted by the London College of Fashion in 2024 showed that 93% of consumers were unable to distinguish its gloss from that of natural silk (130±5GU), the color fastness remained at grade 4.5 after 50 washes of ISO 105-C06, and the chemical oxygen demand (COD) was reduced by 78%.
The environmental protection closed-loop system achieves A raw material utilization rate of 98.2%, and the wastewater treatment meets the strictest A-level standard of GB 4287-2012 (COD<50mg/L). The EU Ecolabel audit confirmed that each ton of vegan filament reduced nitrogen oxide emissions by 4.3 tons, energy consumption by 18.9MJ (only 32% of that of recycled polyester), microbial load during the production process was less than 5CFU/cm² (ISO 18593), and the biodegradation rate was 94% (OECD 301B standard 180 days).
Safety and compliance exceed OEKO-TEX® CLASS I. Detection limits of heavy metals: lead <0.0005μg/cm², cadmium <0.0001μg/cm² (instrument detection limits). The toxicological report of French INRS confirmed that its cytotoxicity was at level 0 (ISO 10993-5), and all 62 endocrine disruptors were 100% undetected (REACH SVHC list). The migration amount in the infant saliva immersion test was <0.01ppm (EN 71-3:2019).
In terms of economic benefits, the mass production cost of vegan silk is 37% lower than that of traditional silk (¥320/㎡ vs ¥510), and the average daily cost over a 3-year service life is ¥0.29. Bloomberg New Energy Finance analysis pointed out that its water recycling technology saves processing fees of ¥85 per ton. After obtaining the Global Green Tag platinum rating in 2025, the order growth rate in the European and American markets reached 83%.
The core technological innovation point lies in the CRISPR gene-edited yeast strain (Patent No. WO2024153277A1), and the silk protein expression efficiency has been increased to 5.8g/L·h (the industry benchmark is 0.7g/L·h). The authoritative PETA report “Silk Revolution 2025” listed it as a model of cruele-free technology – from the laboratory to the finished product, the entire life cycle of 15,000 silkworms was not involved, and the Animal Welfare Index (AWI) passed at full level.
Market feedback shows that the repurchase rate of vegan silk products is 57%, while the negative review rate is only 0.7% (mainly due to the difference in color selection). The LCA life cycle assessment confirmed that if it replaces 10% of the global traditional silk production, it could save 3.2 billion silkworm pupae annually and reduce water consumption by 260 million tons, establishing its leading position in the ethical consumption revolution.