China Shenzhen Zhong Jian South Environment Co., Ltd. Company News

From October 22nd to 23rd, 2025, the second revision and compilation working conference of the national standard "Factory Design Standard for Thin Film Transistor Liquid Crystal Displays" (GB 51136-2015) was successfully held in Shenzhen. This meeting aims to adapt to the rapid development of new display technologies and comprehensively revise the standards that have been implemented for many years, which will regulate and guide the high-quality development of display factory construction in our country.     More than 30 leaders and experts from the Standards and Quotas Department of the Ministry of Housing and Urban-Rural Development, the China Electronics Engineering Design Institute Co., LTD., as well as design institutes, well-known enterprises and research institutions attended the meeting. Yan Bin, the chairman of Shenzhen Zhongjian South Environment Co., LTD., the co-organizer of the conference, attended the meeting and delivered a speech. In his speech, Chairman Yan Bin extended a warm welcome to all the leaders and experts present. He introduced the technical strength and industrial contribution of Shenzhen Zhongjian South in the field of air purification, and expressed that the company is very honored to host this national standard revision conference. It will surely cherish the opportunity, do its best to provide service and support, and contribute to the development of the industry.   This revision of the standard represents a comprehensive upgrade. The meeting conducted in-depth discussions on incorporating the latest display technologies such as 8.5-generation and 11-generation TFT-LCD production line technologies, OLED, and silicon-based OLED into standards. Meanwhile, the revision work is closely integrated with the national strategies of "high-quality development" and "green and low-carbon", aiming to incorporate the digital technologies that have been widely applied in display device factories into the standards, and to coordinate well with relevant professional norms such as fire protection, environmental protection, and smoke prevention and exhaust. The experts attending the meeting spoke freely and had a thorough discussion on the draft of the standard revision chapter by chapter and article by article, laying a solid foundation for the next stage of revision work.   During the conference, the experts were also invited to visit the headquarters of Shenzhen Zhongjian South, gaining a more intuitive and in-depth understanding of its R&D strength and manufacturing capabilities.

The FFU (fan filter unit) equipment in the clean room is an important part of ensuring clean air. Proper installation and maintenance can not only improve the performance of the equipment, but also extend its service life. The following is a guide to the installation and maintenance of FFU equipment： FFU Equipment Installation Steps Preparation Site Inspection: Ensure that the installation location meets the cleanroom layout requirements. The floor should be sturdy and level, with sufficient space for FFU maintenance and filter replacement. Power Supply Check: Ensure the FFU's required voltage and power specifications are met, and that the electrical wiring is properly grounded. Cleanroom Requirements: Before installation, confirm the cleanroom’s design specifications, such as FFU placement, quantity, and airflow requirements, to meet the cleanroom’s ISO standards and cleanliness levels. Installation Process Suspension or Fixation: Depending on the design of the FFU, the unit may be suspended or mounted on the cleanroom ceiling using brackets. Ensure that the FFU is securely installed to prevent vibration or noise. Connect Power Supply: Connect the FFU's power cable to the designated power outlet, ensuring a secure connection that meets safety standards. Filter Installation: Install HEPA or ULPA filters according to the FFU design and specifications. Ensure that the filter seals tightly against the FFU to prevent air leakage. Ventilation Duct Connection: If the FFU needs to connect to ventilation ducts, ensure that the connection is sealed without air leaks and that the ducts are securely installed. Commissioning Power Test: Check that the power supply is functioning properly and that the fan starts without issues. Ensure the fan operates smoothly with minimal noise. Airflow Adjustment: Adjust the fan speed via the control panel to ensure the FFU provides the required airflow and that the airflow direction matches the cleanroom design specifications. FFU Equipment Maintenance Steps Routine Inspections Airflow Check: Regularly inspect the airflow to ensure that it meets the design specifications. Use instruments such as an anemometer to measure airflow. Electrical System Check: Periodically check the power supply, cables, and outlets for any issues. Ensure that no electrical faults or aging components are present. Noise and Vibration Check: Monitor the FFU for unusual noise or vibrations, which may indicate fan damage or other malfunctions. Cleaning and Filter Replacement External Cleaning: Regularly clean the external parts of the FFU with a dust-free cloth or soft cleaning tools to prevent dust buildup, which can affect the unit’s heat dissipation. Filter Replacement: Replace the HEPA or ULPA filters regularly, typically every 6 months to 1 year, depending on the level of contamination in the cleanroom environment. Fan Blade Cleaning: Periodically inspect and clean the fan blades to ensure that the fan operates efficiently, and remove any dust that may obstruct airflow. Functional Testing and Calibration Performance Testing: Regularly conduct performance tests on the FFU to check airflow, particle filtration efficiency, and overall performance. Specialized equipment may be used to monitor air quality. System Calibration: If the FFU is equipped with smart control systems or sensors, periodically calibrate these devices to ensure accurate measurements and control. Emergency Maintenance and Troubleshooting Equipment Malfunctions: If the FFU experiences malfunctions (e.g., the fan stops working, abnormal noise, insufficient airflow), conduct immediate checks. Start by inspecting the power supply and connections, followed by checking for fan or filter blockages or damage. Part Replacement: Replace any damaged parts, such as the fan, motor, or filter, as needed. Conclusion Proper installation and regular maintenance of FFU equipment are crucial for maintaining cleanroom air quality. By performing routine checks, cleaning, and replacing filters, you can ensure that the FFU operates efficiently, extends the equipment's lifespan, and keeps the cleanroom environment at the required cleanliness standards. These maintenance measures will help reduce system malfunctions, improve production efficiency, and ensure compliance with cleanroom standards and regulations.

    Recently, Shenzhen Zhongjian South Environmental Co., Ltd. was honored to receive a delegation from Shaanxi HVAC and Refrigeration Industry Association for its outstanding achievements in the field of air cleanliness and intelligent control. This exchange not only deepened the friendship between the industry associations of the two places, but also opened a new chapter of cooperation on the road of technological innovation and green development.     At the reception ceremony, the representatives of Shenzhen Zhongjian South Environment Co., Ltd. first expressed a warm welcome to Wang Feng, president of Shaanxi HVAC and Refrigeration Industry Association.In this paper, the latest research achievements and technology applications in clean intelligent control and energy saving of semiconductor production lines are introduced in detail, especially in AMC (gaseous molecular pollutants) control, clean room energy efficiency optimization and AIoT system.The application of these technologies not only significantly improves the cleanliness and production efficiency of semiconductor production lines, but also contributes to energy saving and emission reduction and the realization of green production.     Under the careful preparation of the company, Mr. Zhao Hanwei, president of Shenzhen HVAC Purification Industry Association, and Mr. Guo Xiaodan, executive secretary, personally received and introduced in detail the development process, achievements and future blueprint of the association to President Wang Feng and members of the delegation in recent years.President Zhao Hanwei said: "We always uphold the concept of openness and cooperation, and look forward to working together with colleagues from all over the world to seek common development and create brilliant future."     As the host, Mr. Yan Bin, chairman of Shenzhen Zhongjian South Environmental Co., Ltd. showed the delegation the company's outstanding achievements in the field of HVAC purification in the first half of the year and the development blueprint in the second half of the year with full enthusiasm and detailed data. He stressed: "China Construction South is committed to technological innovation and green development, and constantly promote the progress of the industry, looking forward to working with Shaanxi counterparts to jointly explore more efficient and environmentally friendly solutions."     At the meeting, President Wang Feng highly affirmed the achievements made by Shenzhen HVAC Purification Industry Association and Shenzhen Zhongjian South Environment Co., LTD., and stressed: "This visit and exchange is not only a learning journey, but also a bridge of cooperation.We should translate the spirit of the Third Plenary Session of the 20th CPC Central Committee into practical actions, rely on the bridge role of industry associations of the two places, strengthen the guidance of party building, innovate cooperation models, and jointly promote the high-quality development of the HVAC refrigeration industry."     The two sides conducted in-depth discussions on local standards, national standards, group standards and vocational skill level recognition and other aspects, and agreed to strengthen cooperation in key areas such as equipment renewal, energy consumption detection, energy saving transformation, hosting services and contract energy management, and jointly contribute to the realization of the dual carbon goal and promote green development.     This visit not only deepened the friendship between industry associations and enterprises of Shaanxi and Guangdong, but also laid a solid foundation for future cooperation.Shenzhen Zhongjian South Environmental Co., Ltd. will take this opportunity to continue adhering to the development concept of "innovation, green and win-win", and go hand in hand with counterparts all over the country to jointly create a better future of HVAC purification industry!  

The 21st China Animal Husbandry Expo opened grandly at the Nanchang Greenland International Expo Center. At this grand event, which gathered more than 1400 participating companies from around the world, Shenzhen Zhong Jian South Environmnet CO., Ltd. (abbreviated as ZJNF) showcased the overall solution for air purification and epidemic prevention in pig houses in Hall B2, 2B52-2, contributing to the green development of animal husbandry. The air purification problem in animal husbandry has always been a focus of attention in the industry. With the increasing demand for food safety and environmental quality, how to improve the air quality of livestock houses has become an urgent and important task. The problems of microorganisms, dust, and odor in the air not only affect the health and production efficiency of livestock and poultry, but also directly relate to the sustainable development of animal husbandry. As the first national high-tech enterprise in the industry to propose air micro pollution control and treatment technology solutions, ZJNF is committed to providing comprehensive air purification solutions for livestock enterprises. The overall solution for air purification and epidemic prevention in pig houses by ZJNF includes primary and high-efficiency filters, which can intercept small particles and viruses in the air, effectively ensuring the cleanliness of the air in pig houses. In addition, products such as pig growth promoting lamps and wall mounted ventilators further enhance the health and production efficiency of livestock by improving the comfort of the livestock environment. After 20 years of deep cultivation and development, ZJNF has integrated the research and development, manufacturing, sales, and service of air purification products, purification consumables, and purification engineering. It not only provides customers with high-quality products, but also focuses on providing customized services and comprehensive support. ZJNF has a team of high-quality and professional talents, relying on years of industry experience and rich technical accumulation, and has established long-term and stable cooperative relationships with many well-known domestic and foreign animal husbandry enterprises.   The 21st China Animal Husbandry Expo provides a platform for industry exchange and cooperation. The total exhibition area of the exhibition is 190000 square meters, with 14 indoor exhibition halls, 7 outdoor greenhouses, and a 5000 square meter bare space exhibition area. The exhibition is grand in scale, covering relevant products and services in various links of the industry's upstream and downstream industrial chain. There are group exhibition areas, international exhibition areas, pig industry exhibition areas, poultry industry exhibition areas, feed exhibition areas, animal health products (animal health products, veterinary drugs, vaccines) exhibition areas, machinery and equipment exhibition areas, brand animal products exhibition areas, environmental treatment exhibition areas, technology media, financial services, and comprehensive services exhibition areas. ZJNF showcased its technological strength and product innovation on the stage of the Animal Husbandry Expo, and jointly discussed the future development direction of animal husbandry with partners from various fields. The exhibition will continue until May 20th, and ZJNF sincerely invites people from all walks of life to visit Hall B2, booth 2B52-2, to witness the moment when animal husbandry is moving towards a new era of clean air.

With the theme "Pursuing Excellence, Shaping the Future of Digital Innovation," this year's electronics expo is jointly held with the 103rd China Electronics Fair. From chips and hardware equipment to software services, and from electronic manufacturing to emerging fields such as cloud computing, big data, and artificial intelligence, the expo showcases the strong capabilities and innovation of China's electronics and information industry. It serves as a high-quality platform for global industry elites to discuss the "digital future" of the electronics and information industry. ZhongJian South is committed to developing and promoting environmentally friendly air purification products, providing customers with efficient and reliable solutions. By participating in CITE, ZhongJian South has further consolidated its position in the electronics and information industry and showcased its leading position and innovation achievements in the field of air purification technology.

Photovoltaic cell manufacturing   Air filter: 1.Grinding: Before grinding on the surface of the silicon wafer, it is necessary to use an air filter to filter the air to avoid dust, impurities into the grinding liquid. 2.Dye sensitization: Dye sensitization needs to be done in a sterile room or clean room, using a high efficiency air filter to filter the air to avoid contamination with impurities such as microorganisms and dust. 3.Evaporation of metal: The evaporation of metal needs to be carried out in a vacuum chamber, and the air is filtered using an ultra-high efficiency air filter to prevent impurities such as dust and microorganisms entering the vacuum chamber from affecting the purity and uniformity of the evaporated metal.   Chemical filter： The manufacturing of solar crystalline silicon cells involves film deposition and coating steps, which may involve the use of organic solvents, adhesives and other coatings. Volatile organic compounds (VOCs) in these materials can be released into the air, posing a potential risk to employee health and the workshop environment. Chemical filters can be used to remove VOCs from the air, purify and reduce pollution to the environment.   Photovoltaic module manufacturing The manufacturing of photovoltaic modules also needs to be carried out in a clean environment. In the production line, it is necessary to use high efficiency air filters to filter the air to avoid dust, microorganisms and other impurities attached to the surface of the photovoltaic module, affecting the photoelectric conversion efficiency of the module.   Air filter: 1.Cutting: When cutting silicon wafers, it is necessary to use high efficiency air filters to filter the air to avoid dust, impurities into the cutting fluid. 2.Welding: The battery pieces of the component need to be connected by cable, so the air needs to be filtered by air filter in the process of connecting the cable to avoid dust, impurities attached to the cable surface.   Chemical filter： During the silicon cleaning and milling process, chemical solutions and substances such as acids and bases may be used to remove impurities, oxides and other contaminants. Chemical filters can be used to treat the resulting exhaust gas and remove harmful gases and chemicals produced during the process.   High temperature resistant filter： 1.Heat treatment and baking: In the photovoltaic manufacturing process, heat treatment and baking steps may be required, such as silicon wafer annealing, film drying, etc. These steps are usually performed at high temperatures and can produce particulate matter, gases, and volatile organic compounds (VOCs). High temperature air filters can be used to remove particles and pollutants from the air, ensuring purity and product quality in heat treatment and baking processes. 2.Cleaning and corrosion treatment: Cleaning and corrosion treatment steps in photovoltaic manufacturing may need to be carried out in high temperature environments. In these steps, chemical solutions and substances such as acids and bases may be used, and the exhaust gases produced need to be treated. High temperature resistant air filters can be used to remove harmful gases and chemicals from exhaust gases, protecting the workshop environment and the safety of employees. 3.Glass coating and packaging: In the manufacturing of photovoltaic modules, steps such as glass coating and packaging may be required. High-temperature materials and adhesives may be used in these steps, and high-temperature environments and processes are involved. High temperature resistant air filters can be used to filter particles and impurities in the air, ensuring the quality and finish of coatings and packages. 4.Atmosphere control and hot air circulation: In a photovoltaic manufacturing shop, atmosphere control and hot air circulation may be required to maintain specific process conditions and temperatures. High temperature resistant air filters can be used to filter particles and impurities in the air to ensure the purity and stability of the atmosphere.   Photovoltaic power generation project construction In the construction of a photovoltaic power station, the collector line needs to be installed between the component and the inverter, so the air in the collector line pipeline needs to be clean. It is necessary to install an air filter at the entrance of the collector line pipeline to prevent dust and impurities in the pipeline from entering the system and affecting the operation efficiency of the power station.   Air filter: 1.Collector line pipeline inlet: An air filter needs to be installed at the collector line pipeline inlet to prevent dust and impurities in the pipeline from entering the system and affecting the operation efficiency of the power station. 2.Inverter: The inverter is one of the key components of the photovoltaic power station, and the air filter needs to be used inside the inverter to filter the air to ensure the operation efficiency of the power station and the normal operation of the inverter.  

Shenzhen ZhongJian South Air Purification Technology Research Institute was established in April 2018, the laboratory began preparations in 2016, which area over 500 square meters, with 40 sets of instruments and equipment, it is a testing institution of air purification products with strong technical force and the most advanced testing equipment in South China.   The laboratory owns a multidisciplinary team of highly qualified professionals who can test various air purification products using national and international general testing standards.We are Cooperating with Xi 'an Jiaotong University, National Household Appliance Research Institute and other institutions to continuously improve the level of laboratory testing.   The institute has established a scientific quality management system according to ISO 17025, and has obtained CNAS accreditation certificate.   In the scope of the laboratory to ensure that all services provided for customers are in line with the requirements of ISO/IEC 17025, in order to meet or even exceed customer requirements, make full use of good management system to carry out basic management work, to ensure that the work is efficient and orderly to carry out, to provide customers with good service, establish a good company image and reputation.