烏金報報

Using the discarded husks of Guantian’s water caltrops, Guantian Black Gold developed an energy-saving patented carbonization process that turns a local agricultural residue into water caltrop shell biochar. The project brought together industry, government, schools, and community participants, and the material is described as meeting European Biochar Certificate and International Biochar Initiative requirements. Its applications address air purification, water treatment, and soil improvement, including local projects involving a rehabilitation bus, water-caltrop fields, and rice cultivation. The brand also develops charcoal-based home goods under its “100 Charcoal Ways of Living” concept, with products such as long incense, small cylindrical incense containers, grain or seed gift sets, and sample packs showing the irregular black biochar material.