Pioneering precision instruments for municipal grids, commercial facilities, and harsh industrial environments.
Founded in 2003, Xinhaosi is one of the most influential and trusted brands in the global gas safety industry. Over the past two decades, we have steadily built a robust and comprehensive production and service system, which integrates cutting-edge R&D, intelligent manufacturing with advanced automation equipment, digital marketing across global channels, professional after-sales support with an experienced technician team, flexible OEM/ODM services, as well as CNAS-Accredited laboratory calibration services that meet international standards.
Our diversified product portfolio covers industrial & residential gas detection & alarm systems, industrial & household gas solenoid valves, and urban gas pipeline network monitoring systems—all engineered to adapt to complex working environments and strict safety requirements. We produce and sell tens of millions of units annually, catering to a wide range of industries that demand reliable gas detection solutions, including oil & gas exploration and production, petrochemicals, urban gas distribution, automotive manufacturing, pharmaceuticals, new energy, steel production, and beverage processing.
Guided by the core mission of “Making Gas Safety Accessible Everywhere,” we consistently deliver high-performance, reliable products and customized solutions tailored to each client’s unique needs. Every item we manufacture undergoes rigorous quality control tests, and every service we provide is backed by our professional technical team, fully embodying our unwavering commitment to safeguarding gas safety across both industrial workplaces and residential environments.
Chengdu Factory & Office
Deyang Factory
"By merging localized industrial gas sensing demands with our extensive Deyang and Chengdu manufacturing base capacity, we deliver high-integrity protection designed to withstand extreme underground municipal humidity and corrosive toxic atmospheres."
Sewer networks are toxic incubators for volatile compounds. Understanding these elements is vital to human life protection and regulatory compliance.
Highly toxic and corrosive, H₂S causes rapid olfactory fatigue, leaving workers blind to rising concentrations. At high levels, just a few breaths can be fatal. Our systems utilize highly sensitive electrochemical sensors to alert workers before exposure reaches dangerous levels.
Methane is a colorless, odorless gas that builds up in confined wastewater spaces, creating severe explosion risks. Methane displaces oxygen, leading to asphyxiation risks. We deploy catalytic combustion and NDIR sensors to monitor the Lower Explosive Limit (LEL) in real-time.
Organic decomposition and illegal industrial chemical dumping release Carbon Monoxide (CO) and Volatile Organic Compounds (VOCs) into sewers. Multi-channel detection solutions ensure all volatile toxic fractions are accurately cataloged and flagged.
Adhering to ISO9001 quality management system standards, Xinhaosi's core products have obtained a full range of authoritative certifications, including national compulsory Products Certification, explosion-proof certification, fire product certification, CPA measurement instrument type approval certificate, and international approvals such as CE and SIL. Additionally, Xinhaosi holds honors such as "National Quality Integrity Benchmark Enterprise", "National Quality Leading Enterprise in the Gas Alarm Industry," membership in the China Fire Protection Association, and acts as the main drafting organization for the national standard of solenoid valves, further confirming its industry influence and reputation.
In the field of intellectual property, Xinhaosi has built a robust innovation system with over 50 patents and software copyrights. These patents cover core technological areas, including a graphical monitoring system for gas detection and alarm, which enables predictive maintenance based on historical data to reduce equipment failure rates by over 30%, and a solenoid valve with flow monitoring functionality that integrates flow detection and alarm capabilities.
Our in-house laboratory is accredited by the China National Accreditation Service for Conformity Assessment (CNAS), recognized both domestically and internationally under the ILAC-MRA framework. It operates in accordance with ISO/IEC 17025, the international standard for testing and calibration laboratories. It provides reliable and traceable testing services for gas detection and alarm products, solenoid valves, and related safety equipment. Test reports issued by the CNAS-accredited laboratory are widely accepted by regulatory authorities, certification bodies, and customers in China and overseas, helping to ensure product quality, safety compliance, and market access.
Leveraging advanced manufacturing clusters to ensure stable delivery times, cost-effectiveness, and reliable quality control.
Our dual factories in Chengdu and Deyang leverage Southwest China's advanced electronics and machinery manufacturing clusters. This proximity reduces component transit times and gives us direct access to high-grade industrial raw materials.
Precision calibration of gas sensors is fully automated. By utilizing robotic testing arrays, we eliminate manual human error in gas dosing calibrations. This automated system ensures stable sensor drift curves for all shipped lots.
We maintain a rolling buffer stock of critical components, including sensor heads, solenoid valves, and explosion-proof housings. This allows us to offer short lead times even during global supply chain disruptions.
Sewer gas detection equipment must adapt to the unique operating conditions of each environment.
Environment: Saturated humidity, high organic content, fluctuating water lines.
Solution: Explosion-proof diffusion detectors mounted at varying heights. Our sensors feature hydrophobic filters to prevent moisture damage without reducing gas entry rates, maintaining continuous protection.
Environment: High automotive exhaust emissions and sewer line entry points.
Solution: Carbon Monoxide and combustible gas systems that link directly to ventilation controls. When gas levels rise, the system triggers fans and closes safety solenoid valves to protect building occupants.
Environment: Hydrocarbon vapors, explosive vapors, corrosive atmospheric compounds.
Solution: Heavy-duty, SIL-certified flameproof detectors that link to DCS controllers. These systems provide rapid alarm response times to prevent flammable vapors from tracking back into active production lines.
Our engineering teams focus on improving response times, reducing maintenance costs, and developing smart IoT integrations.
Integrating LoRaWAN, NB-IoT, and 4G communication technologies into remote sewer monitoring stations. These low-power configurations allow systems to run for years on internal batteries, reducing installation wiring costs.
Developing internal reference cells and smart diagnostics that monitor and correct for sensor drift automatically. This reduces the need for regular field calibrations, helping to lower long-term operating costs.
Adding flow-monitoring microchips to solenoid valves. By combining flow, pressure, and gas alarm data, these systems can predict leaks and isolate lines automatically before accidents occur.
Gas safety is subject to strict local regulations. Standardized products may fail to meet local compliance requirements. At Xinhaosi, we offer customized solutions designed to comply with local safety regulations worldwide.
Our global support network includes certified distributors, local service teams, and remote support. Whether you need custom housing colors, specific communication protocols (Modbus, BACnet, HART), or explosion-proof certifications for a particular market, our engineering team is here to help.
Make sure your installations comply with all local industrial and occupational safety regulations:
More than two decades of innovation, growth, and commitment to global gas safety standards.
● Established on April 17th, 2003.
● Launched our first-generation gas leak alarm and fire fighting products.
● Began production of gas safety valves.
● Expanded our OEM business globally.
● Relocated to our corporate headquarters in Longtan Industrial Park.
● Reached 10 million units in gas detector sales.
● Moved manufacturing operations into the Chengdu factory.
● Built a comprehensive sales and support network across China.
● Launched our fire power monitoring systems.
● Launched our in-house developed IoT cloud platform.
● Introduced automatic fire alarm, emergency lighting, and evacuation systems.
● Received High-Tech Enterprise certification.
● Became a qualified supplier for China's top 5 gas groups.
● Began construction of our new Deyang factory.
● Established the Petrochemical and International Business Divisions.
● Awarded the title of Sichuan Provincial Technology Center.
● Completed and launched operations at the Deyang factory.
● Rolled out urban gas pipeline network monitoring products.
● Introduced wireless gas detection systems and AI-powered safety solenoid valves.
Answers to common technical, design, and regulatory questions about sewer gas monitoring.
Sewer safety systems monitor four main hazards: Hydrogen Sulfide (H₂S), which is toxic and corrosive; Methane (CH₄), which forms explosive mixtures with air; Carbon Monoxide (CO), which causes carbon monoxide poisoning; and Oxygen (O₂) levels, as gas accumulation can displace oxygen and lead to asphyxiation risks.
High humidity and condensation can block sensor inlets, causing signal drift or sensor failure. Xinhaosi detectors feature built-in hydrophobic membranes, temperature compensation circuits, and optional heated sensor heads to ensure reliable operation in environments with up to 95% non-condensing relative humidity.
CNAS accreditation under ISO/IEC 17025 standard ensures that our laboratory's testing and calibration results are traceable and accurate. Test reports from our laboratory are recognized by safety regulators globally, helping to simplify compliance audits and ensure the reliability of your safety systems.
Our solenoid valves, such as the KT-XF5 and BT-XF5 Series, act as automatic safety shut-offs. When a detector identifies a combustible gas leak above pre-set thresholds, it sends a signal to the valve, which closes instantly to stop the flow of gas and prevent potential ignition.
Complete safety systems, from explosion-proof sensors to automatic shut-off valves and telemetry gateways.
