Explore our core engineering catalog featuring direct links to certified industrial products
In modern construction, commercial real estate developers, EPC contractors, and mechanical system integrators face escalating pressure to reduce installation time while ensuring zero-leakage security. Traditional torch-brazing methods present significant liability concerns, including hot work permits, fire hazards, and joint inconsistencies.
As an industry-leading manufacturer, Ningbo Taojun Refrigeration Equipment Co., Ltd. (operating under the global brand TAOJUN) addresses this market evolution. By deploying high-purity C12200 deoxidized copper, advanced internal sealing gaskets, and state-of-the-art manufacturing lines, we produce highly reliable press-connect fittings, copper accumulators, and stop valves that conform to global HVAC regulations.
From a specialized research accessory supplier to an international manufacturing powerhouse
Founded in 1988, our predecessor was the Xiangshan Refrigeration Accessories Factory of Zhejiang University. Over the course of 38 years, our development team has designed and manufactured critical flow control components, condensers, check valves, and filtration assemblies.
In 2021, Taojun was recognized as a National High-Tech Enterprise, reinforcing our dedication to process innovations and advanced production layouts. Located in Ningbo, China, we export to Europe, North America, South America, Southeast Asia, and the Middle East, partner-shipping with industry leaders such as Haier, Midea, Gree, Whirlpool, and Electrolux.
Understanding the metallurgical precision, molecular chemistry, and manufacturing standards of Taojun parts
We source high-purity C12200 Deoxidized High Phosphorus (DHP) copper, containing minimum 99.9% Copper. This guarantees optimum ductility for crimping, resistance to dezincification, and excellent heat transfer metrics.
Our filter driers integrate 3A molecular sieves providing water absorption efficiency ≥20%. Accompanied by activated carbon layers, they effectively neutralize organic acids and capture particulates to protect compressors.
Using argon arc welding processes, we eliminate joint porosity and potential leakage channels. Finished products undergo intensive helium mass spectrometer leak testing and high-pressure fatigue analysis.
Reflecting on our journey from 1988 towards intelligent digital manufacturing
Established as the Xiangshan Refrigeration Accessories Factory of Zhejiang University, initiating long-term academic partnerships in mechanical engineering.
Deployed computerized MES workshop management workflows, streamlining production transparency and traceability for large-scale OEM orders.
Formally launched the "Taojun" and "Lingshan" brand portfolios, specializing in high-performance copper accumulators, split stop valves, and filter driers.
The core values that define the quality of our service and engineering relationships
We prioritize people-oriented operations, high integrity management, and customer satisfaction. Honesty is the foundation of our supply chain stability.
Continually upgrading manufacturing systems, product concepts, and service programs ensures we adapt to emerging market opportunities.
We maintain a strong commitment to quality. Defect minimizations are achieved through structural, long-term testing protocols.
Collaborating closely with clients and industry engineers helps us pool resources, complement technologies, and establish mutual growth.
Supporting critical cooling systems across multiple vertical sectors
Providing high-efficiency condensers and dry filters for domestic refrigerators, deep freezers, and split air conditioning systems.
Delivering critical flow control check valves and heavy-duty filter driers to commercial cold-chain logistics, walk-in coolers, and supermarket storage.
Supplying vibration-resistant and high-pressure tolerant stop valves and customized connectors for mobile air conditioning (MAC) configurations.
Partnering with global clients from design consultancies to after-sales support
Juntao Refrigeration: Your Trusted OEM/ODM Manufacturing Partner
We operate in accordance with a strict quality management system, certified to GB/T19001-2016 / ISO9001:2015 (Registration No.: 41325Q00065R0S). Our certification is officially verifiable via the Certification and Accreditation Administration of the People's Republic of China (CNCA) portal (www.cnca.gov.cn) and our auditing partner, Zhongci International (www.zcgirz.com).
Our products conform to the European Union's RoHS Directive (2011/65/EU) and REACH regulations, as well as UL certifications in the United States, supporting compliant exports to international markets.
ISO9001 Certificate
Detailed Scope
UL Compliance
RoHS Testing
CE Certification
Factory Audit
A comprehensive breakdown of our manufacturing, engineering, and support capabilities
Benefit from over 35 years of R&D expertise driven by research collaborations with Zhejiang University and University of Science and Technology of China (USTC).
We target a low defect rate of under 0.05% through rigorous checks, including 24-hour smart film aging and 500-hour environmental chambers.
Our core production machinery is imported directly from Germany to achieve high manufacturing precision and narrow tolerances.
Our MES (Manufacturing Execution System) tracking system records production steps for high material traceability.
To prevent operational leaks, all cooling components undergo automated helium chamber leak testing.
We accommodate customized specifications and offer low minimum order quantities (MOQs) to fit our partners' inventory needs.
Expert insights on HVAC connection configurations, material performance, and standards
Review additional system components, tools, and replacement parts
Taojun