Decent Cayman (Nasdaq: DXST) is a small China-based water treatment company that operates through its Shandong subsidiary, Shandong Dingxin Ecology Environmental. Dingxin provides water pollution treatment services and sells microbial products to industrial customers in China. The company's core business covers two areas: industrial wastewater treatment and river water quality management. For wastewater, Dingxin focuses on protein-rich effluent from agri-food processors, using a microbial process that recovers usable proteins and polysaccharides rather than simply breaking down organic matter. For rivers and urban waterways, Dingxin uses microbial bacteria remediation to restore polluted, oxygen-depleted waterways, which the company argues delivers more durable results than conventional physical or chemical methods. Dingxin also sells proprietary bacteria agents and water treatment chemicals as standalone products. Engineering services — designing, building, and commissioning treatment systems — account for the large majority of revenue, with product sales making up the remainder. Revenue is highly concentrated, with three customers accounting for roughly 88% of FY2025 revenue. Dingxin's customer base spans construction, agri-food processing, and automotive manufacturing. The company's near-term growth plan focuses on expanding nationally from its Shandong base and growing into rural sewage treatment. Longer-term, Dingxin aims to pursue larger government-backed infrastructure projects under BOT and PPP models.