Connection 

As water caltrop shells often get discarded, it once becomes an environmental burden. However, Guantian Black Gold has transformed these shells into eco-friendly products, achieving the goal of producing “biochar” and creating opportunities for innovative local development. By adopting a circular economy, Guantian Black Gold lets the waste of water caltrop shells into products that can have diverse uses and lets people recognize the local industries, increasing the value of water caltrop’s industry while significantly reducing carbon emissions. This kind of innovation solves the problem of agricultural debris problems, fostering the Guantain local economy to change and develop. Using the local discarded water caltrop shell and recreate it to become an eco-friendly product is an important footstep toward achieving goal 11 of SDGs (sustainable city and communities). By emphasizing the potential of local resources and traditional practices, Guantian Black Gold’s efforts demonstrate how combining environmental innovation with local characteristics toward the solution to modern challenges and the reference for the other company to learn and create. Beyond this, the initiative encourages people to reconnect with and rediscover the unique value of local industries and businesses, fostering a deeper understanding of the local culture and creating a renewed social and economic identity for the community.