ecomaru is an innovative, eco-friendly purging compound for injection molding machines, designed with SDGs in mind. It leverages recycled glass wool to effectively remove carbides and black dots, significantly reducing defect rates from 0.15% to 0.01% within a year, as demonstrated in practical applications. This leads to substantial cost reductions by shortening cleaning times, eliminating the need for a second wash, and decreasing material usage and waste by up to 67% compared to conventional methods. A core technical advantage lies in its unique glass wool composition. Unlike traditional GF-filled compounds, ecomaru's glass wool fibers are notably shorter (approximately 0.06mm vs. 0.8mm) and thinner (4-6µm vs. 11µm). This finer structure provides a larger surface area and more active edges, enabling gentle yet highly effective cleaning without causing abrasive wear on critical machine components like screws. Furthermore, ecomaru contributes to an improved working environment by suppressing odor and smoke during the purging process. The product line offers three specialized grades: GSS, a high-grade, all-around product for black dot removal and resin/color changes; GWS, which prioritizes black dot and carbide removal with simultaneous restraining effects; and GWP, an olefinic high-grade product for specific resins like PP and PE, also excelling in carbide removal and resin changes. ecomaru is compatible with a wide array of resins, including PC, ABS, PA6/66, POM, and PBT, and is recommended for efficient automatic and short purging methods. Real-world examples highlight its ability to reduce machine disassembly frequency from five times a month to just once or twice, facilitate earlier production starts, and prevent carbide adhesion, thereby boosting overall operational efficiency and product quality.