Yixing Haina Environmental Engineering Co., Ltd. was established in 1995 and is located in Gaocheng Town, Yixing City, a well - known environmental protection hometown in China. The company is a high - tech enterprise integrating scientific research and development, technological innovation, technical consultation, design, manufacturing, sales, installation and commissioning, and after - sales service. Its annual output value exceeds 200 million yuan. It mainly produces four major series of products: dust removal, desulfurization, denitrification, and wet electrostatic precipitators. So far, the sales volume of the dust removal section is nearly 10,000 units; the desulfurization section is nearly 5,000 units; the denitrification section is nearly 3,000 units; and the wet electrostatic precipitator section is nearly 250 units. There are nearly 500 system engineering projects. The products cover all parts of the country and are exported to countries in Africa, South America, Southeast Asia, etc.

I. Hardware

The company has 35,000 square meters of standard workshops (including a 6,000 - square - meter bag filter workshop, an 8,000 - square - meter desulfurization tower workshop, a 5,000 - square - meter wet electrostatic precipitator workshop, a 3,000 - square - meter non - standard workshop, a 5,000 - square - meter multi - tube water film workshop, a 4,000 - square - meter processing and batching center, and a 4,000 - square - meter semi - finished product workshop), a 5,000 - square - meter office building, and 150 employees. Among them, there are 22 technical personnel, 5 R & D personnel, 100 senior technicians, 8 project managers, 6 after - sales staff, 4 quality inspection specialists, and 25 employees in other departments.

II. Software

Qualifications and honors mainly include: a registered capital of 68 million yuan; a Class B design qualification for air pollution control projects; a Class I professional contracting qualification for environmental protection projects; a Class II professional contracting qualification for building mechanical and electrical installation projects; a Class III general contracting qualification for municipal public works construction; and a work safety license. Honorary certificates: Top 10 enterprises in the Chinese dust collector industry; High - tech enterprise; Specialized, refined, distinctive, and innovative small and medium - sized enterprise; Five - star enterprise for national after - sales service; Quality management system certification certificate, environmental management system certification certificate, and occupational health and safety management system certification certificate; Well - known trademark in Wuxi City; Enterprise technology center in Wuxi City; Gazelle enterprise in the Southern Jiangsu Independent Innovation Demonstration Zone in 2022; Gazelle enterprise in Jiangsu High - tech Industrial Development Zone; and more than 50 patent certificates.

III. Technical Support

1. A strong technical team analyzes and studies the treatment of boiler and kiln flue gas under complex working conditions. After consultation, a comprehensive treatment plan is formulated.

2. The company is committed to providing comprehensive and overall solutions for dust removal, desulfurization, denitrification, and wet electrostatic precipitator projects. It has accumulated rich project practice experience in the field of air pollution, established a relatively complete flue gas treatment process system, and successfully cultivated a professional technical and service team, including 3 senior engineers, 12 intermediate engineers, and 8 ordinary workers. It can provide customized project solutions based on the unique properties of the project flue gas, the initial concentration level, specific emission standards, and the customer's investment budget.

3. Provide customers with a full - range of solutions including process design, equipment processing and manufacturing, equipment system integration, and project construction to meet the diverse needs of customers. Haina's rich industry application experience has won a good market reputation.

IV. Quality Assurance

1. Performance guarantee: Under normal working conditions, ensure the performance indicators of ultra - low emissions: dust: 5mg; sulfur: 35mg; nitrogen oxides: 50mg.

2. Quality guarantee: It has a complete engineering quality management system and process, comprehensively controlling from the engineering analysis meeting - source design - production order - material inspection - quality control at production nodes - overall quality inspection after completion - quality and integrity inspection before leaving the factory - quality control by the project manager during installation - commissioning - training - data handover - third - party monitoring, etc.

3. Production equipment: Mainly include: 4 intelligent laser cutting machines; a set of robotic welding equipment; a set of automated processing centers; 2 CNC bending machines; a CNC stainless - steel special bending machine, a plate shearing machine; 4 CNC pipe rolling machines; a steel plate embossing machine; a set of automatic desulfurization tower assembly lines; 2 CNC drilling machines; a set of CNC sandblasting rooms; a set of painting rooms, etc.

4. Purchased equipment and materials: The technical agreement guarantees the brand of purchased parts, does not use OEM products, does not reduce the thickness of steel, and offers a ten - fold penalty for counterfeiting.

5. Operation and maintenance guarantee: Consider long - term stable operation in equipment selection, brand, and anti - corrosion. The main equipment warranty periods are: 5 years for multi - tube dust collectors; 2 years for bag dust collectors (2 years for filter bags and cages; burning and clogging of bags are not covered by the warranty; new boilers must be oven - dried before installing filter bags); 3 years for denitrification (1 year for biomass catalysts; 3 years for coal - fired; new boilers must be oven - dried before installing catalysts); 5 years for desulfurization towers (5 years for the anti - corrosion structure of the main tower body, 1 year for others; dry - burning due to water interruption is not covered by the warranty); 2 years for wet electrostatic precipitators.

V. Service Commitment

To ensure that users can enjoy a comprehensive and systematic service when using the company's equipment and promote the continuous optimization of the service - oriented business system, adhering to the principle of technological leadership and committed to improving product quality, we hereby make the following solemn commitments to our users:

1. In case of a system failure during operation, we will dispatch professional engineering and technical personnel to the site within 12 hours after receiving the customer's notice to promptly troubleshoot and ensure the normal operation of the system.

2. After the system is officially put into operation, the company will conduct regular follow - up visits more than twice a year. The main contents of the follow - up visits include: in - depth understanding of the equipment usage, free inspection of the internal and external conditions of the main equipment, the operation of electric valves, automatic control devices, and mechanical and electrical equipment, as well as the operation of the entire treatment facility to ensure the stable operation of the equipment and user satisfaction.

3. A strong installation and after - sales service team provides comprehensive and considerate services to protect the customer's system.