Product Introduction The Distributed · IoT SF6 Management Shelter is an intelligent solution specifically designed for SF6 gas management, integrating intelligent monitoring, remote control, and safe storage. The shelter framework adopts a standard container design, and the structure is a walk – in design. The interior of the shelter is ingeniously divided into two areas by variable – position partitions. The first area is specifically set for gas cylinder storage, and the second area can be used to install SF6 gas recovery devices and other maintenance tools, or store hazardous waste such as waste lead – acid batteries and transformer oil. The shelter can achieve remote data transmission and video monitoring, and realize functions such as gas cylinder gas information ledgers, inbound and outbound management, user – permission hierarchical review, and SMS notifications, providing a standardized gas storage management method and improving gas usage efficiency. Main Features 1. The Distributed · IoT SF6 Management Shelter is equipped with an environmental monitoring system, which can monitor the SF6 gas content, oxygen content, temperature, and humidity in real – time, and supports fan linkage and sound – light alarm functions to ensure operational safety. 2. Through the 4G network, it can achieve device positioning, remote data transmission, and video monitoring, supporting real – time viewing and management to improve management efficiency. 3. This SF6 management shelter is equipped with a touch – screen and a mobile app, supporting functions such as access control unlocking, inventory query, and gas inbound and outbound management. The gas cylinders are equipped with physical ID digital identities to achieve precise query and management of gas type, weight, quality, etc. 4. It supports 220V mains power input and reserves a solar power supply interface. Users can quickly switch the power supply method according to their needs to adapt to various scenarios. 5. The storage unit of the Distributed · IoT SF6 Management Shelter is equipped with an intelligent lock, which is linked with the system control software to ensure storage safety. The gas cylinder weighing device further guarantees storage reliability. 6. It supports multi – terminal operations on the app and web, realizing functions such as regional hierarchical management, data hierarchical management, and user – permission hierarchical review. Product Parameters Parameter Name Parameter Value Unloaded Weight 2.3t Number of Stored Gas Cylinders 40-64 cylinders Power Supply 220V Power 2000W Crane Arm Load Capacity 300kg Dimensions 6058mm×2438mm×2591mm (L×W×H)

At the critical stage of the high-quality development of the UHV power grid and the advancement of the “dual carbon” goal, the operation efficiency and intelligent level of SF6 gas in the installation and maintenance of GIS and GIL equipment directly affect the quality of power grid operation and maintenance. The RFG-1001 mobile SF6 gas service workstation has emerged as the times require. With the core of “full-function integration, high-efficiency operation, and digital control”, it creates a one-stop solution for comprehensive SF6 gas operations and redefines the standards for power grid gas operations. Full-dimensional operation capabilities covering the entire gas treatment process As an integrated SF6 gas service operation equipment, the RFG-1001 mobile SF6 gas service workstation realizes the closed loop of six core functions of “recovery, evacuation, gas filling, purification, storage, and detection”: Efficient recovery without delay: The conventional recovery rate reaches 60m³/h, and the negative pressure recovery rate soars to 160m³/h. With a negative pressure recovery limit pressure of ≤100Pa, the SF6 gas in the equipment is quickly evacuated, greatly shortening the operation cycle; Deep vacuum to ensure cleanliness: The evacuation rate of the mobile SF6 gas service workstation is as high as 500m³/h, and the ultimate vacuum degree is as low as 0.8Pa, thoroughly removing impurities and moisture in the equipment and laying a clean foundation for gas filling; Rapid gas filling to improve efficiency: The gas filling rate reaches 150kg/h, equipped with a large-flow pressure regulation design to meet the needs of rapid and stable gas filling in multiple scenarios and avoid affecting the project progress due to long waiting times; Purification and regeneration to reduce costs: The mobile SF6 gas service workstation is equipped with deep purification treatment equipment and high-precision analysis and detection instruments, which can purify and regenerate the quality of SF6 gas, realize the recycling of gas, and reduce procurement and emission costs; Large-capacity storage to ensure supply: The storage area composed of 6 professional storage tanks has both large-capacity gas storage and large-flow pressure regulation and gas filling capabilities, adapting to the gas reserve needs of different-scale operations without the need for frequent transfers. Intelligent and convenient design, reshaping the operation experience The RFG-1001 workstation takes the design concept of “close to the site, intelligent control” to make the operation more efficient and worry-free: Pre – operation to improve efficiency: The front – end equipment area integrates recovery, evacuation, and uninterrupted gas filling equipment. The high – power technology is used to connect to the switch body nearby, reducing pipeline losses and significantly improving operation efficiency; Digital control and visualization: The control room of the mobile SF6 gas service workstation is equipped with a professional digital control system, which supports remote monitoring of equipment operation status, real – time transmission of operation parameters, realizes “visual operation, remote control”, and reduces the on – site personnel’s operation intensity; Considerate configuration shows care: The auxiliary equipment area is equipped with front – end equipment cables, gas filling pipeline reels, tools are neatly stored…

Product Introduction Based on digital twin technology, SF6 gas deep purification and refining technology, automatic cylinder handling technology, and automatic cylinder storage technology, the RF-101J SF6 purification and treatment system realizes contactless and fully automatic SF6 gas recovery, purification, outbound, inbound, gas detection, filling, cylinder handling, and other whole-process SF6 gas purification and treatment work. Main Features 1. SF6 gas recovery, purification, filling, and storage. The quality of SF6 gas after purification meets the requirements of the GB/T 12022 standard. 2. The cylinder pretreatment device of the RF-101J SF6 purification and treatment system: uses water bath heating and vaporization to improve the gas recovery rate. 3. Gas pretreatment device: can handle SF6 decomposition gases with excessive content in waste gas. 4. Gas buffer tank: can store a large amount of SF6 gas to improve the SF6 treatment rate. 5. The SF6 purification and treatment system is equipped with a purification and refining device: to ensure the quality of SF6 gas purification and regeneration. 6. SF6 liquid filling function: It can fill a 40L cylinder with 50kg of SF6 in (5 – 8) minutes. 7. Intelligent cylinder storage device: realizes digital control of the cylinder storage and distribution process. 8. The RF-101J SF6 purification and treatment system adopts an industrial control system: full touch screen operation, and remote operation is also available. 9. Optional embedded detection instruments can detect the purity, humidity, and decomposition products of SF6 gas. Product Parameters Parameter Name Parameter Value Oil-free water-cooled compressor 38m³/h Final output pressure 50bar Oil-free booster 5m³/h@liquid SF6 Vacuum pump 64m³/h, ultimate vacuum 0.1mbar Vacuum compressor 31.3m³/h, ultimate vacuum 1mbar Purification and refining tank 220L, design pressure 50bar, stainless steel material Rectification column Deep purification, stainless steel material Cooling method Mechanical refrigeration Cylinder pre-treatment device Capable of handling 12@40L cylinders simultaneously, heating power 45kW Gas pre-treatment device Adopts water washing, alkali washing and cold drying process to treat toxic components in SF6 faulty gas Gas buffer tank 1000L, design pressure 50bar, carbon steel material Intelligent cylinder storage repository Capable of storing 380@40L gas cylinders, automatic access, digital management and control Structural form Closed type Control method 15-inch touch screen control and remote control Power supply Three-phase five-wire system, AC380V, 50Hz

As a newly developed large-scale intelligent SF6 gas comprehensive treatment equipment of our company, the RF-300N Mobile SF6 Recovery & Purification Unit takes the PLC control system as the core and integrates six core functions of “vacuum evacuation, gas recovery, deep purification, precise refilling, cylinder filling, and vaporization output”, completely replacing the cumbersome process of switching between traditional multiple devices and providing the optimal solution for the full-life cycle gas service of industrial SF6 electrical equipment and switches. The product design and manufacturing fully comply with the DL/T 662 industry standard and is the core equipment for enterprises to ensure production safety and implement environmental compliance. Core advantages: compliance, high efficiency, and intelligence, solving three major industry pain points 1. Double compliance of purification and recovery, risk-free compliance throughout the process This Mobile SF6 Recovery & Purification Unit adopts the dual technologies of “negative pressure recovery + lifting rectification tower”. The SF6 gas recovery rate far exceeds that of conventional equipment, and the quality of the purified gas fully meets the GB/T 12022 standard. It can be directly reused in equipment without the need to purchase additional new gas, greatly reducing gas costs. It efficiently filters moisture, decomposition products, and solid particles in SF6 gas, avoiding potential hazards such as internal corrosion of equipment and decline in insulation performance from the source, and extending the service life of electrical equipment. 2. High-efficiency operation in multiple scenarios, maximum efficiency Rapid filling: A 40L SF6 cylinder can be filled with 50kg in 5-8 minutes, far exceeding the industry average speed. No need to wait for emergency energy replenishment. Flexible recovery: The gas can be directly recovered into the equipment gas storage tank or stored in an external cylinder, adapting to different on-site storage requirements. Intelligent refilling: It supports “direct refilling (constant pressure output)” and “pressurized refilling (compressor/booster dual mode)”, meeting the precise gas supplement requirements of equipment with different pressure levels. Independent heating + vaporization output: Equipped with an independent rectification tank and gas heating system, it can ensure refilling efficiency even in low-temperature environments and avoid work interruptions caused by gas liquefaction. 3. Intelligent and convenient operation, zero threshold for operation and maintenance Fully visual control: Industrial-grade full-touch screen operation, the PLC system real-time displays key data such as vacuum degree, pressure, and recovery volume. The whole process is transparent and controllable, and novices can quickly get started. Upgraded safety protection: The vacuum pump is equipped with an anti-backflow oil valve to prevent oil from flowing back and polluting the gas. The vacuum degree is monitored in real-time during vacuum evacuation to avoid equipment overload damage. Modular design: Compact and beautiful structure, small footprint, and convenient for movement (suitable for multiple scenarios such as workshops and outdoors). For later maintenance, only the targeted modules need to be repaired without shutting down the whole machine, reducing operation and maintenance costs. Not only basic functions, but also customized upgrade space For high-requirement customers, the RF-300N Mobile SF6 Recovery & Purification Unit can be…

Facing the gas treatment requirements of SF6 electrical equipment and switch rooms, RF-391 Large-scale SF6 Recovery Unit takes “integration, high efficiency, and compliance” as the core to create a professional service system covering the whole process, becoming a reliable assistant for the stable operation of the power system. 1. Full-function Integration, Say Goodbye to the Troubles of Multi-device Collaboration There is no need to match multiple devices. RF-391 can handle five core requirements in one stop: Vacuum Pumping: The PLC interface displays the real-time change of vacuum degree. The operation is transparent and controllable, and the pumping process is accurately visible. Gas Recovery: The recovered gas can be flexibly stored in the on-board storage tank or external cylinders, adapting to different on-site storage conditions. Gas Refilling: The RF-391 Large-scale SF6 Recovery Unit supports two modes of “pressure-regulating direct filling” and “gas/liquid phase compression filling”, meeting the diverse refilling needs of switchgear and pressure vessels. Cylinder Compression: Efficiently compress the recovered gas to improve storage utilization. Vaporization Output: Adapt to the gas form requirements under different working conditions without the need for additional vaporization equipment. 2. Hardcore Performance, Balancing Efficiency and Safety Designed based on the DL/T 662 standard, RF-391 ensures the reliability of operations with details: Efficient Recovery: With the support of negative pressure recovery technology, the recovery efficiency is significantly improved, reducing SF6 gas loss. Purity Assurance: The RF-391 Large-scale SF6 Recovery Unit is equipped with a precision filtration system to simultaneously remove moisture, decomposition products, and particulate matter, ensuring gas purity. Safety Protection: The vacuum pump is equipped with an anti-backflow valve to avoid reverse flow damage to the equipment. The independent storage tank + gas heating system ensures stable operation in low-temperature environments. Rapid Filling: The filling efficiency of liquid SF6 reaches “50kg in a 40L cylinder only takes 5 – 8 minutes”, greatly shortening the operation time. 3. Flexible Adaptability, Coping with Diverse Global Working Conditions Whether your operation scenario is in the frigid zone or the tropics, RF-391 can perform stably: Multiple cooling methods are available, perfectly adapting to different global climate conditions. The semi-closed protective structure + modular design not only has strong anti-interference ability but also is convenient for later maintenance – component replacement and fault troubleshooting are more efficient, reducing operation and maintenance costs. The compact and beautiful appearance design saves on-site space occupation, and it can be flexibly deployed in narrow switch rooms. 4. The Trusted Choice of the Power System From substations to large switch stations, the RF-391 Large-scale SF6 Recovery Unit has been widely used in various SF6 gas recovery scenarios. With the advantages of “complete functions, stable performance, and easy operation”, it continuously ensures the safe operation of equipment under complex working conditions, helps power enterprises reduce costs and increase efficiency, and realizes the compliant and efficient management of SF6 gas. Choosing the RF-391 Large-scale SF6 Recovery Unit means choosing a “worry-free, efficient, and reliable” SF6 gas treatment solution! Product Parameters Parameter Name Parameter Value Filter Filters moisture,…

Product Introduction The SF6 gas leakage online monitoring system transmits the real-time measurement information of SF6 (sulfur hexafluoride), oxygen (O₂), temperature and humidity on – site to the DCS through the RS – 485 bus. When the measured data exceeds the set alarm value, the monitoring system controls the start of audible and visual alarms or exhaust equipment. With the human infrared monitoring function, when a human body is detected, the fan will be automatically turned on. After exhausting for a certain period of time (the exhaust time can be set in the fan parameters as required), the staff can enter the work area to ensure safe production on – site. This SF6 gas leakage online monitoring system is widely applicable to the power industry, metallurgical industry, petrochemical industry, etc., in places where SF₆ gas is used, such as GIS electrical switches, transformers, and electrical busbars. Main Features 1. The SF6 gas leakage online monitoring system uses imported SF₆ gas infrared sensors with an ultra – long service life. 2. Detection and display of environmental temperature, humidity and oxygen content. 3. The SF6 gas leakage online monitoring system can be equipped with functional components such as human infrared detectors, voice prompts, audible and visual alarms, and linked fans. 4. It supports RS – 485 bus data input, and can achieve detection, display, recording and alarm of up to 64 monitoring points. 5. The SF6 gas leakage online monitoring system supports the remote transmission output of measurement data through RS – 485. Product Parameters NA1000MR Multi-channel Alarm Controller Parameters Parameter Name Parameter Value Display Screen TFT256 color Transmission Interface RS-485 bus Transmission Distance ≤1000m Connection Method RVVP 4×0.75mm² shielded cable bus type Input Quantity （1~64）channels of intelligent transmitters Operating Voltage （85~265）VAC, 50/60Hz Ambient Temperature （-30~60）°C Ambient Humidity （0~95）%RH (no condensation) Installation Method Wall-mounted Dimensions 440mm×330mm×140 mm （L×W×H） Weight 10kg NA1000FDII Gas Detection Alarm Parameters Sulfur Hexafluoride (SF₆) Gas Measurement Parameters Parameter Name Parameter Value Measurement Range （0~1500）ppm Maximum Allowable Error ±30ppm or ±5% (indicated value) Repeatability ≤3% Span and Zero Drift ±3%F.S Response Time ＜60 Oxygen (O₂) Measurement Parameters Parameter Name Parameter Value Measurement Range （0~25）% Maximum Allowable Error ±0.5% (volume ratio) Repeatability ≤1% Span and Zero Drift ±1%F.S Response Time ＜60s Temperature Measurement Parameters Parameter Name Parameter Value Measurement Range （-40~100）°C Maximum Allowable Error ±2°C Humidity Measurement Parameters Parameter Name Parameter Value Measurement Range （0~99）%RH Maximum Allowable Error ±5%RH

Product Introduction The SF6 gas density monitor is used to monitor the density of SF₆ gas in a sealed container. It displays the density change trend through a dynamic curve, predicts the gas filling time, and has a recovery rate measurement function. When the density value reaches the set value, an electrical contact signal is output. At the same time, data such as density, leakage rate, and warning signals can be remotely transmitted in real time to achieve the online remote monitoring function. Main Features 1. This SF6 gas density monitor is used for dynamic real-time monitoring of the pressure, temperature, and density of SF₆ gas in the gas chamber. 2. Data curve display for an intuitive understanding of the dynamic trend of the gas chamber. 3. Calculation of the leakage rate to predict the gas filling time. 4. This SF6 gas density monitor has a temperature compensation function and high measurement accuracy. 5. This SF6 gas density monitor has a recovery rate determination function. 6. Data remote transmission via ModBus protocol. Product Parameters Parameter Value Pressure Range (-0.1~0.9) MPa Density Error ≤±0.5% F.S Temperature Range (-40~+70)°C Temperature Error ±1°C Density Accuracy Class 1.0/1.6 @20°C, Class 1.6/2.5 @-40°C~+60°C (optional) Sealing Performance 1×10⁻⁹ Pa·m³/s (helium leak test) Interface Size M20×1.5, G1/2 (customizable) Insulation Performance Insulation Resistance: ≥100 MΩ Dielectric Strength: 2 kV, 1 min, no breakdown Enclosure Protection IP65 Communication Protocol RS-485, ModBus RTU Operating Voltage DC24V

Product Introduction The RA912F SF6 Gas Analyzer is a high-precision and intelligent detection instrument newly developed by our company. It is mainly applied to the detection of various indicators of SF₆ gas in industries such as power, railway, petrochemical, and electrical equipment manufacturing. It can detect gas purity, humidity, and the content of decomposition products on-site. Main Features 1. ID automatic identification and entry function, which solves the problem of connecting on-site measurement data with measurement equipment. 2. The RA912F SF6 Gas Analyzer can be customized with a data upload function according to customer needs, providing a basis for big data analysis. 3. Automatic flow regulation function. The system can automatically adjust the flow according to the preset flow rate. 4. The RA912F SF6 Gas Analyzer has an automatic inlet pressure detection function, and can issue an alarm prompt when the pressure is normal or abnormal. 5. The measurement results are automatically diagnosed according to national standard criteria, and corresponding adjustment measures are prompted. 6. The RA912F SF6 Gas Analyzer can realize automatic/manual measurement modes. In the automatic measurement mode, after the measurement is completed, it can actively alarm to prompt the staff and end the measurement actively. 7. One – click data export function. You can choose to export data in the standard template format of the State Grid or the Southern Power Grid. It can automatically realize the accurate measurement and prediction function of SO₂, as well as the humidity protection and measurement function. Product Parameters SF₆ Purity   Principle Thermal conductivity Range (0~100) %(vol) Maximum Permissible Error ±0.5%(vol) Humidity Principle Capacitive Range (-60~+20) °C Maximum Permissible Error ±2°C SO₂ Detection Principle Electrochemical Range (0~100) μL/L Maximum Permissible Error (0~10) μL/L: 0.5uL/L; (10~100) μL/L: 5% H₂S Detection Principle Electrochemical Range (0~100) μL/L Maximum Permissible Error (0~10) μL/L: 0.5uL/L; (10~100) μL/L: 5% CO Detection Principle Electrochemical Range (0~500) μL/L Maximum Permissible Error (0~50) μL/L: ±2μL/L; (50~500) μL/L: ±4%