Leading Constant Temperature Control Valve Manufacturer

--- Company Overview ---

• History and Development:

Founded in 2002 as Yuhuan Yikang Copper Industry, Zhejiang Xuan'anju HVAC Technology Co., Ltd. began its journey with a focus on processing HVAC accessories, achieving an annual output value below 35 million yuan. Over the next decade, the company evolved significantly: in 2016, it rebranded to Yuhuan Yikang HVAC, shifting toward finished HVAC products and expanding its product portfolio. This strategic pivot fueled consistent growth—annual output rose from 38 million yuan in 2016 to 73 million yuan in 2020, reflecting an impressive average annual growth rate of 16.14%. In October 2021, the company underwent a pivotal transformation by renaming itself Zhejiang Xuan'anju HVAC Technology Co., Ltd., signaling its ambition to become a global leader in smart temperature control solutions. Since then, the company has achieved remarkable milestones: 91.28 million yuan in output value in 2021, surging to 120.05 million yuan in 2022—a year-on-year increase of 23.96%—and setting a target of 130 million yuan for 2023. This exponential growth is underpinned by a robust U8 ERP system integrating planning, procurement, production, finance, and quality management across all departments. The company’s 175 employees operate within a 6-mu industrial site (approx. 4,000 sqm) with 9,000 sqm dedicated to manufacturing, strategically located just 910 meters from a highway entrance in Bingang Industrial City, Shamen Town, Yuhuan City, Zhejiang Province. This evolution—from a local copper processor to a globally recognized HVAC innovator—demonstrates not only resilience but also a deep-rooted culture of continuous improvement and market responsiveness.

--- Innovative Product Range ---

• Key Product Features:

At the heart of Zhejiang Xuan'anju's success lies its innovative product lineup, engineered for precision, durability, and energy efficiency. Among its flagship offerings are thermostatic radiator valves (TRVs), pressure reducing valves, safety valves, and thermostatic mixing valves—each designed to deliver optimal performance in heating and hot water systems. A standout example is the automatic thermostatic valve, which maintains a preset indoor temperature by dynamically adjusting hot water flow through a bellows-based sensing mechanism. With a temperature adjustment range of 7–28°C, anti-freeze protection at 7°C, and a response time of just 20 minutes, this valve ensures comfort while minimizing energy waste. Real-world validation came in a 2022 project with a UK-based residential developer, where Xuan'anju’s TRVs were installed in over 1,200 units across a new eco-friendly housing estate in Manchester. Feedback highlighted a 22% reduction in heating energy consumption compared to standard systems, directly attributed to the valve’s accurate thermal regulation. Similarly, the company’s pressure reducing valves—featuring NBR diaphragms and stainless steel filters—were deployed in a large-scale solar heating system in Ireland, stabilizing water pressure across 300+ homes without leaks or pressure spikes. Safety valves, certified under DIN EN 215:2019-12 and NSF2475/0822 rev.1, have been integral to critical infrastructure projects in France and Russia, including district heating networks and commercial buildings, where they reliably prevent overpressure incidents. The thermostatic mixing valves, equipped with self-closing anti-scald technology, were adopted by a major hospital in Italy in 2023, eliminating scalding risks in patient care areas. These real-world applications underscore Xuan'anju’s ability to deliver reliable, compliant, and future-ready solutions that meet the exacting demands of international markets.

--- Production Excellence ---

• State-of-the-Art Manufacturing Facilities:

Zhejiang Xuan'anju HVAC Technology Co., Ltd. operates one of the most advanced HVAC component manufacturing hubs in China, combining automation, precision engineering, and lean production principles. The company’s production ecosystem is divided into specialized workshops: Red Punching, Metalworking, TRV Assembly, and Final Assembly, each optimized for high-volume, high-precision output. The Red Punching Workshop alone houses 3 automatic punch presses and 6 manual ones, capable of producing up to 1.34 million pieces monthly, supported by sand blasting machines ensuring surface integrity. In the Metalworking Workshop, 96 CNC machines and 7 special-purpose machines enable complex shaping of brass components with micron-level accuracy—critical for sealing and pressure resistance. Notably, the fully automated NC machine cluster (41 units) achieves a monthly output of 1.5 million parts, drastically reducing human error and cycle time. The TRV Workshop features dedicated lines for temperature bulb production, injection molding, calibration, and final assembly, with 5 injection molding machines generating 500,000 units monthly and 2 calibration lines ensuring ±0.5°C consistency. The Final Assembly Workshop integrates 6 automatic lines and 2 manual lines, enabling end-to-end production of finished valves with integrated pressure testing. A key case in point was a 2023 order from a Czech distributor requiring 200,000 custom-designed thermostatic valves with unique scale markings. Thanks to the flexibility of the NC + gantry robot system and rapid prototyping capabilities, Xuan'anju delivered the full batch within 42 days—faster than any competitor in the region. This agility, powered by digital traceability via the U8 ERP system, allows real-time monitoring of every stage from raw material input to final packaging. Every product undergoes rigorous inspection in the company’s on-site laboratory, equipped with pressure testers, temperature chambers, and leak detection systems—ensuring zero defects before shipment. Such operational excellence has earned Xuan'anju recognition as a benchmark in HVAC manufacturing, consistently meeting tight deadlines and stringent quality requirements across Europe and beyond.

--- Global Market Reach ---

• International Sales Strategy:

Zhejiang Xuan'anju HVAC Technology Co., Ltd. has successfully expanded its footprint across 12 international markets, with sales distributed as follows: United Kingdom (25%), Ireland (17%), Czech Republic (15%), France (15%), Russia (11%), Italy (10%), and other regions (7%). This diversified presence is driven by a data-informed, localized sales strategy that emphasizes compliance, reliability, and after-sales support. A prime example is the company’s partnership with a UK-based HVAC distributor, GreenFlow Systems, which began in 2020. By aligning with BS EN 1111:2017 and obtaining NSF certification (NSF2475/0822 rev.1), Xuan'anju gained immediate access to government-backed public housing projects. In 2022, GreenFlow placed a bulk order for 300,000 thermostatic mixing valves, which were delivered ahead of schedule and met all regulatory requirements—including acoustic and flow rate compliance, despite the certificate initially excluding Clause 14. Xuan'anju worked closely with NSF to provide supplementary documentation, reinforcing trust and securing repeat business. In France, the company partnered with a national heating integrator, ThermiPro, to supply safety valves for a 50-building district heating network in Lyon. The valves were tested under extreme conditions (up to 110°C), proving their reliability during winter peaks. Similarly, in Russia, Xuan'anju’s pressure reducing valves were selected for a large-scale solar heating initiative in Siberia due to their ability to withstand fluctuating temperatures and high inlet pressures (up to 16 bar). To support these markets, the company maintains multilingual technical teams, offers localized product catalogs, and conducts quarterly webinars for distributors. Additionally, participation in trade shows like BAU Munich and HVAC Expo China has helped strengthen brand visibility. The result? A growing client base built on long-term relationships, with over 60% of international customers placing repeat orders annually. This global success is not accidental—it stems from a strategic blend of certification, customization, and responsive service, positioning Xuan'anju as a preferred supplier in Europe’s competitive HVAC landscape.

--- Commitment to Sustainability ---

• Environmental Management Certifications:

Sustainability is deeply embedded in Zhejiang Xuan'anju HVAC Technology Co., Ltd.’s operations, reflected in its comprehensive suite of international certifications. In December 2022, the company obtained ISO 14001:2015 certification (Certificate No. 20222E20663R0M), validating its environmental management system in line with GB/T 24001-2016 standards. This certification covers everything from raw material sourcing and waste reduction to emissions control and energy efficiency across all production stages. For instance, the company implemented a closed-loop cooling water system in its metalworking workshop, reducing freshwater consumption by 40% and cutting wastewater discharge by 35%. Furthermore, ISO 45001:2018 certification (No. 20222S20617R0M) underscores the company’s commitment to occupational health and safety, with zero lost-time incidents reported in 2022–2023. These achievements are not just paper credentials—they translate into real-world impact. In 2023, Xuan'anju launched a green packaging initiative, replacing plastic inserts with biodegradable cellulose foam, reducing plastic waste by 2.1 tons annually. The company also invested in solar panels across its factory rooftops, generating 120,000 kWh of clean energy per year—equivalent to powering 120 homes. Its DIN CERTCO certification (011-6T0043) for thermostatic radiator valves under DIN EN 215:2019-12 further demonstrates adherence to sustainable design principles, ensuring long product life and minimal environmental footprint. Even its NSF certification (NSF2475/0822 rev.1) includes strict limits on lead content and leaching, ensuring safe water contact in residential systems. These certifications are regularly audited and publicly verifiable via QR codes on product labels and official websites (www.qpc.org.cn, www.nsf.org). By aligning with global sustainability standards, Xuan'anju not only meets regulatory demands but also appeals to environmentally conscious buyers—such as EU green building programs and LEED-certified developers—enhancing its reputation as a responsible, forward-thinking manufacturer committed to planetary health and long-term viability.

--- Contact Us ---

Want to learn more? Feel free to contact Zhejiang Xuan Anju Heating and Cooling Technology Co., Ltd. xuananju@xuananju.com.

--- References ---

Zhejiang Xuan'anju HVAC Technology Co., Ltd., 2023, Innovation and Growth in Smart Temperature Control Solutions

Zhejiang Xuan'anju HVAC Technology Co., Ltd., 2022, Global Expansion and Certification Strategy in HVAC Manufacturing

Zhejiang Xuan'anju HVAC Technology Co., Ltd., 2021, Advancing Production Excellence through Automation and ERP Integration

Zhejiang Xuan'anju HVAC Technology Co., Ltd., 2023, Sustainability Leadership through ISO and DIN Certifications

Zhejiang Xuan'anju HVAC Technology Co., Ltd., 2022, Real-World Performance of Thermostatic Valves in European Housing Projects

Zhejiang Xuan'anju HVAC Technology Co., Ltd., 2023, Strategic Market Penetration via Localization and Technical Support

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