.gtr-container-7x9y2z { font-family: Verdana, Helvetica, "Times New Roman", Arial, sans-serif; color: #333; line-height: 1.6; padding: 20px; box-sizing: border-box; } .gtr-container-7x9y2z-main-title { font-size: 18px; font-weight: bold; margin-bottom: 10px; text-align: left; color: #0056b3; } .gtr-container-7x9y2z-subtitle { font-size: 14px; margin-bottom: 20px; text-align: left; color: #555; } .gtr-container-7x9y2z-section-title { font-size: 18px; font-weight: bold; margin-top: 30px; margin-bottom: 15px; text-align: left; color: #0056b3; border-bottom: 2px solid #eee; padding-bottom: 8px; } .gtr-container-7x9y2z p { font-size: 14px; margin-bottom: 15px; text-align: left !important; line-height: 1.6; } .gtr-container-7x9y2z strong { font-weight: bold; color: #0056b3; } .gtr-container-7x9y2z-list { list-style: none !important; padding-left: 0; margin-bottom: 20px; } .gtr-container-7x9y2z-list li { position: relative; padding-left: 20px; margin-bottom: 8px; font-size: 14px; text-align: left; } .gtr-container-7x9y2z-list li::before { content: "•" !important; position: absolute !important; left: 0 !important; color: #0056b3; font-weight: bold; font-size: 16px; line-height: 1; } .gtr-container-7x9y2z-feature-section { margin-top: 30px; margin-bottom: 30px; padding: 20px; border: 1px solid #ddd !important; border-radius: 4px; } .gtr-container-7x9y2z-feature-title { font-size: 16px; font-weight: bold; margin-bottom: 10px; color: #0056b3; } .gtr-container-7x9y2z-feature-subtitle { font-size: 16px; font-weight: bold; margin-top: 20px; margin-bottom: 15px; color: #333; } .gtr-container-7x9y2z-feature-item { margin-bottom: 15px; } .gtr-container-7x9y2z-feature-item-title { font-size: 14px; font-weight: bold; margin-bottom: 5px; color: #333; } .gtr-container-7x9y2z-feature-item-description { font-size: 14px; margin-bottom: 0; color: #555; } .gtr-container-7x9y2z-image-wrapper { margin-bottom: 20px; } @media (min-width: 768px) { .gtr-container-7x9y2z { padding: 30px 50px; max-width: 960px; margin: 0 auto; } } How Compact High and Low Temperature Test Chambers Improve Reliability Testing for Automotive & Electronic Components Discover how compact high and low temperature test chambers help engineers validate product reliability, reduce failure risks, and meet IEC & ISO environmental testing standards. Introduction: Why Temperature Testing Matters More Than Ever In today’s fast-evolving automotive and electronics industries, reliability is no longer optional—it is expected. From automotive sensors and EV components to PCBs and precision materials, even the smallest temperature fluctuation can cause hidden failures. These failures often appear not during production, but months—or years—later in real-world use. This is where a compact high and low temperature test chamber, also known as an environmental test chamber, becomes an essential tool rather than a luxury. The Challenge: Limited Space, Growing Testing Demands Many laboratories and quality control departments face the same dilemma: Limited lab space Increasing test standards More frequent reliability validation Higher expectations from OEMs and regulators Large environmental chambers are not always practical for small parts, R&D samples, or pilot testing. Engineers need a solution that is compact, precise, and compliant. The Solution: Compact Environmental Test Chambers A small high and low temperature test chamber, such as the 80L class, is designed specifically for: Precision temperature cycling High / low temperature aging tests Early-stage failure detection Standard-compliant validation testing Despite its compact size, it delivers the same control logic, safety architecture, and test credibility as larger environmental chambers. How the HeJin Compact High and Low Temperature Test Chamber Solves These Problems As a source manufacturer, HeJin designs compact environmental test chambers with real-world engineering needs in mind. Key Solution Advantages Space-Efficient Design Ideal for labs with limited floor space while maintaining professional test performance. Stable Temperature Accuracy Ensures repeatable results for R&D, quality inspection, and compliance testing. Standard-Oriented Engineering Designed with IEC 60068 and ISO 16750 testing logic in mind. Lower Energy Consumption Optimized refrigeration and insulation reduce long-term operating costs. Scalable for Future Needs Supports custom temperature ranges, control programs, and safety upgrades. Standards Supported by Compact Temperature Chambers A professional environmental test chamber is not just about temperature—it is about compliance. Commonly referenced standards include: IEC 60068-2-1 – Cold test methods IEC 60068-2-2 – Dry heat testing IEC 60068-2-14 – Temperature change & cycling ISO 16750-4 – Automotive environmental testing GB/T 2423 Series – National equivalent standards These standards are widely required by OEMs, Tier 1 suppliers, and certification bodies. Why Compact Chambers Are Ideal for R&D and Quality Control Large chambers are powerful—but not always efficient. Compact environmental test chambers offer: Faster test preparation Lower operating costs Easier sample handling Faster design iteration For engineers, this means shorter development cycles and earlier risk detection. HeJin: More Than Equipment, A Testing Solution Partner HeJin is not a distributor.We are a manufacturer focused on environmental test chambers and automotive testing solutions. What customers value most: Direct technical communication Customizable solutions Reliable long-term support Stable supply of spare parts Our compact high and low temperature test chambers are designed to support your testing goals today and scale with your needs tomorrow.

H & H group has two companies: H J Automatic Control Technology Co.,Ltd (hereinafter referred to as the H J)and Guangzhou HongCe Equipment Co.,Ltd (hereinafter referred to as the HongCe).   Founded in 2012, H J is a high-tech enterprise integrating R & D, production, sales and service. Its main business includes vacuum helium detection, gas recovery, automatic brazing machine, air tightness test, liquid filling recovery and other related products.   Since 2015, Hongce has been dedicated to the development and production of IEC, EN, UL, VDE, BS, AS, ISO and other standard testing equipment and home appliance energy efficiency testing systems. It is a high-tech enterprise with technical advantages and R&D capabilities in the testing instrument industry.   In order to cultivate the team spirit of unity, close cooperation and overcoming difficulties of employees; cultivate the ability of planning, organization and coordination, cultivate obedience to command and meticulous work attitude; enhance mutual trust and understanding between employees. Our company specially arranged 2 days of outdoor team activities.  

The Systems manufactured by HeJin use Helium as tracing gas for detecting leaks. This test allows measuring the defined the leak position on the component/test piece. In this case the Test piece to Be Tested is connected to the helium filling joint. Then the Test piece are pressurised with helium. Tracing gas come out from test piece through leaks and is detected and measured by sniffer connected to Helium Mass Spectrometer.     The system proposed has a totally automatic cycle with manual load and unload of the Test pieces. The Test Cycle can be described in the following way: Manual connect the test piece to the helium filling joint. Pressurization of test pieces with nitrogen. Pressure decay to reveal gross leaks; Pressure discharge and test pieces evacuation; Pressurization of test pieces with helium. Manual leak test with sniffer detector. Helium recovery from test pieces. Manual unload the test piece.  

The IPX1-IPX8 waterproof test system consist of:   1. Diameter 600mm turntable; 2. Water supply tank (also for IPX7 immersion test) and electrical control cabinet; 3. Drip test area 1000*600mm for IPX1-2 test; 4. R400mm, R600mm, R800mm oscillating tubes for IPX3-4 test; 5. Hand-held spray nozzle for IPX3-4 test; 6. Jet nozzle for IPX5-6 test; 7. Fixed bracket for hand-held spray nozzle and jet nozzle; 8. Diameter 800mm tank for IPX8 immersion test.   The testing machine is composed of vertically falling water drops tester (IPX1, IPX2), oscillating tube tester (IPX3, IPX4), spray nozzle (IPX3, IPX4), jet nozzle (IPX5, IPX6), turntable and smart water supply and control chamber (including the immersion box for IPX7 testing).   We have produced this system and shipped it to our Mexican customers.

The In-line Automatic Flame Brazing Machine include the main body (main pedestal, preheating torches, brazing torches, coils cooling, fume hood, water cooling system), gas line part, convey part and PLC control parts.   And the main function inclued: 1. Automatically ignite and extinguish fire; Automatically switch the strength of the flame; keep flame stable, avoid tempering 2. With faulty alarm and self-diagnostic functions 3. Gas concentration detection function: when the gas concentration reaches to the 50% of explosive limit, the system will automatically shut down or close the gas valve, and alarm occurs. 4. Extinguishing with nitrogen: can avoid deflagration. 5. Power-off protection: the equipment will automatically fill in nitrogen 6. Emergency button: In urgent cases, the electrical and pneumatic system can be shut-off immediately and starts extinguishing protection.   This system has been successfully installed and used at the customer site.

The Helium Leak Detection System is specially designed for leak test Condenser, Evaporator, Automobile radiator, Engine cooler, switch gears, and it is the most efficient industrial-scale Automatic Leak Testing Equipments for Heat Exchangers in Market.   The system is able to run the following tests: Leak detection with pressure decay method to find Gross Leaks. Helium test with mass spectrometer to find Fine leaks.   Features: PLC control, touch screen display All automatic leak testing with over all leak test Non operator dependent Back ground suppression technology, ensure precise testing Automatic digital pass/Fail indication. Ensure operation reliability   The chamber helium leak test system proposed has the totally automatic cycle with manual load and unload of the tested piece. The Test Cycle can be described in the following way: Manual load of the tested piece in the Test Chamber. Closure of the Chamber. Evacuation of the Chamber to a value of vacuum suitable for Leak Test with Mass Spectrometer. During the evacuation of the Chamber, the system will run the following Tests on the tested piece: Pressure decay to reveal Gross Leaks; Tested piece evacuation; Reaching a vacuum value suitable for transfer, that is to put the mass spectrometer in communication with the Test Chamber. Reading of background, which is the residual Helium in the Test Chamber. Pressurization of tested piece with Helium. Leak test with Mass Spectrometer. Ventilation of the Test Chamber (return to atmospheric pressure), Helium Recovery from tested piece. Opening of the Chamber Manual unloads of tested piece.