A The main differences are water sources and contaminants. Rainwater and greywater are usually collected and treated separately, while other wastewater may be more complex. Treatment must match the intended reuse and water quality requirements.

A Treatment may combine dosing, solids separation, filtration and membrane units, depending on acidity, alkalinity, fluoride, metals and organic contaminants. The process is selected based on wastewater analysis.

A Automatic dosing controls chemical addition based on time, flow or online monitoring signals, reducing manual intervention and improving consistency. Control methods can be configured for each project.

A Key factors include wastewater quality and volume, intended reuse and target water quality, together with space, energy use, operating costs, and concentrate and sludge disposal.

A Yes. We have overseas operations or local teams in markets including the United States, the UAE, Indonesia, Thailand, Vietnam and Malaysia, supporting project coordination and technical services.

A Our experience covers steelmaking, automotive manufacturing and industrial parks. Overseas references include water treatment projects for Haier’s Thailand facility and BYD’s Indonesia production base.

A Yes. We can share relevant project references and supply scopes. Customer recommendation letters or contact details are subject to authorization.

A ECH holds 142 patents across fields including chemicals, treatment processes and equipment, supporting product development and technological innovation.

A ECH is a water treatment manufacturer integrating R&D, production and technical services. We provide equipment, specialty chemicals and integrated solutions under our international brand, ECOSPARK.

A ECH holds ISO 9001, ISO 14001 and ISO 45001 certifications, with CE certification for multiple water treatment products. We also hold Grade I environmental engineering contracting and Grade B specialized design qualifications for water pollution control.

A As a publicly‑listed water‑treatment solution provider (Stock Code:603200) founded in 1994, ECH boasts strong R&D strength, rich intellectual property portfolio and full‑chain project delivery capacity. We have obtained multiple authoritative qualifications: ISO9001, ISO14001, ISO45001, CE certification for 11 water‑treatment devices, Class‑B environmental‑engineering design qualification and Class‑1 environmental‑engineering contracting qualification. We are a national high‑tech enterprise, ranked top‑5 globally within the water‑treatment industry, and recognized as a trusted advanced demonstration enterprise for environmental services. Besides technology credentials, our full‑cycle after‑sales & technical support team guarantees stable long‑term operation for industrial and municipal water‑treatment projects.

A ECH delivers comprehensive water‑treatment solutions for both civil and industrial sectors. Our served industries cover steel metallurgy, petrochemicals, automotive manufacturing, pharmaceutical electronics, commercial real‑estate, healthcare facilities and airport complexes. Our global client base exceeds 2,000 enterprises, including more than 128 Fortune‑500 companies such as Huawei, Baosteel, Siemens, Johnson & Johnson, Hua Hong NEC and Yanfeng Johnson. We operate subsidiaries across USA, UK, UAE, Indonesia, Thailand and Vietnam, enabling localised technical service for overseas projects. We also manage over 100 third‑party environmental‑pollution‑control facilities worldwide.

A Our custom‑built water‑treatment systems are widely deployed for commercial & public building projects including financial towers, large‑scale shopping malls, theaters, star‑rated hotels, hospitals, airports, urban complexes and government buildings. For industrial scenarios, our solutions serve steel plants, auto‑manufacturing workshops, electronics & pharmaceutical factories. Our product portfolio includes rainwater & greywater collection systems, wastewater reuse systems, water‑purification systems, swimming‑pool circulation systems, automatic chemical‑dosing systems and reverse‑osmosis water‑treatment units, covering new construction, retrofitting and upgrade of existing water‑treatment infrastructure.

A Yes. Beyond conventional water‑treatment chemicals and equipment supply, ECH delivers one‑stop sustainable water‑management packages focusing on energy‑saving, low‑carbon operation and water resource recycling. Our scope includes reclaimed‑water reuse, wastewater recycling, rain‑grey‑water harvesting, high‑efficiency energy‑saving water‑treatment equipment and intelligent automatic‑dosing devices. These solutions help clients reduce water consumption, cut wastewater discharge and lower overall operational energy cost for factories and commercial premises.

A ECH adopts an integrated full‑service turn‑key model covering the complete project lifecycle. Our services span custom water‑treatment chemical supply, equipment R&D & manufacturing, process engineering design, on‑site installation & commissioning, staff training, as well as long‑term full‑cycle operation & maintenance (O&M). We can undertake third‑party facility management for water‑treatment plants, providing highly‑responsive local technical support via our global subsidiary network, to secure stable and reliable long‑run project performance.