On November 26, a major fire broke out at Wang Fuk Court in Tai Po, Hong Kong. The fire started at 14:51 PM and spread rapidly along the external scaffolding, escalating to a Level 5 fire alarm within just 3 hours. It affected multiple high-rise residential buildings, resulting in at least 44 fatalities, dozens of injuries, and over 200 residents being temporarily uncontactable.This tragedy has caused heavy losses to Hong Kong and once again sounded the safety alarm for high-density cities. Whether in urban operation, critical infrastructure, or energy system construction, as scales expand and systems grow more complex, people’s demand for "safety" is no longer limited to prevention—it must ensure reliability and controllability at the source.

Against the backdrop of accelerated energy transition, energy storage safety has become a core concern for both society and the industry. Traditional high-energy-density batteries carry thermal runaway risks under extreme conditions. Multiple global energy storage fire incidents in recent years have further proven: to deploy energy storage in cities, buildings, and critical scenarios, external management alone cannot address fundamental risks. True safety must be guaranteed by the material system and technical route itself.Thus, developing energy storage technologies that eliminate combustion and explosion risks at the intrinsic level has become an inevitable direction for the energy industry to achieve larger scale and higher reliability.

As a next-generation long-duration energy storage technology, Liquid Flow Batteries are emerging as a key direction for the industry to achieve higher safety standards. Since its establishment, ZH Energy has always adhered to "safety first," taking the intrinsic safety of the liquid flow system as the core of its technical route.

▶ Intrinsically Non-Flammable: Eliminate Safety Hazards at the Source

Liquid flow batteries use aqueous electrolytes, which are non-flammable and non-explosive. They will not experience thermal runaway due to mechanical impact, short circuits, or high temperatures, fundamentally avoiding the fire risks associated with traditional high-energy-density batteries.

▶ Separation of Energy and Reaction: More Controllable and Reliable Systems

Liquid flow batteries store energy in external electrolyte tanks, with a design that isolates the energy storage from the stack reaction zone. This prevents single-point failures from spreading into systemic accidents, significantly enhancing overall safety redundancy.

▶ Full Lifecycle Controllability: Adapt to Demanding Scenario Requirements

The aqueous system operates gently and can be monitored in real time through multiple dimensions (such as flow rate, temperature, and pressure), enabling engineering-level active safety management and ensuring long-term stable operation.

▶ Ideal Solution for High-Safety-Level Scenarios

In applications with extremely high safety requirements, liquid flow batteries do not offer “slightly better safety”—instead, they provide an intrinsic safety system of an entirely different level.

• High-density urban areas (e.g., regions with strict fire safety standards like Hong Kong and Singapore)

• Critical load scenarios such as hospitals, data centers, and rail transit

• Large-scale wind and solar power plants and grid-side long-duration energy storage

• High-foot-traffic areas including schools, complexes, and public buildings

Every accident reminds us: safety is not an optional extra, but a shared bottom line for urban operation and the development of energy systems. ZH Energy believes that true progress in the energy storage industry does not only come from increased capacity and reduced costs, but more importantly from a commitment to safety and a firm choice of technical route. In the future, ZH Energy will continue to focus on liquid flow batteries, promoting the deployment of intrinsically safe long-duration energy storage in more scenarios to provide more stable and reliable energy support for cities, industries, and power systems.

We are deeply saddened and grieved for the lives lost; we hold deep concern and care for the injured and uncontactable residents. May the deceased rest in peace, and the survivors stay strong. We also hope that all affected families can rebuild their lives and regain peace and warmth soon.