GST compliance testing has been accredited by the China National Accreditation Service for Conformity Assessment (CNAS), the United States Consumer Product Safety Commission (CPSC), and the China Metrology Certification (CMA). The acquisition of these authoritative qualifications not only highly recognizes the technical strength of the Tonggui testing, but also signifies the international credibility of its testing results. In addition, the company adheres to the service tenet of "professional, efficient, caring, and thoughtful", providing one-stop services from project consulting, testing implementation, report interpretation, certification guidance, greatly saving customers' time and energy. With high-quality services and good reputation, it has won wide praise in the industry.

Automotive Interior

International testing standards: The atomization testing standards include DIN 75201 "Determination of the windscreen fogging characteristics of trim materials in motor vehicles", ISO 6452, and SAE J1756. These standards stipulate the use of atomization tests on automotive interior decoration materials to control volatile substances in the materials and reduce environmental pollution inside the vehicle.

Reliability testing: including high temperature aging test, placing interior parts in a high temperature environment to inspect the stability, color change, deformation, cracking, etc. of materials; There is also odor testing, which evaluates the intensity and nature of odors emitted from the interior through professional sniffing or instrument analysis, ensuring compliance with human health and comfort requirements.

car seat

International testing standard 4: Europe has ECE R17, ECE R21, and ECE R44, etc; The United States has FMVSS 207, FMVSS 210, and FMVSS 213, among others; International standards include ISO 7176, ISO 7179, and ISO 12842. These standards provide requirements for the structure, materials, and performance of seats, as well as testing methods and evaluation criteria.

Reliability Test 4: Static testing evaluates material strength, stiffness, etc. through tensile and bending tests; Dynamic testing includes vibration, impact, and collision testing, simulating the real environment of vehicle driving, evaluating seat comfort, safety, and protective performance; The durability test simulates the long-term use process by folding and adjusting the seat, and evaluates its performance and lifespan.

Auto Roof

International testing standards: generally refer to relevant standards for automotive interior materials, such as ISO 3795 on combustion performance, which specifies the combustion characteristics of automotive interior materials under specific conditions to ensure that the spread of fire can be delayed and passenger safety can be guaranteed in the event of a vehicle fire.

Reliability test: Conduct high and low temperature cycling tests to investigate the performance changes of ceiling materials at different temperatures, such as whether there are problems such as delamination and deformation; There is also a friction resistance test, which simulates the friction that may occur with the ceiling during daily use, to test its surface wear resistance and color fastness.

Door trim panel

International testing standards: Referring to the general standards for interior materials, such as harmful substance limit standards, similar to the EU's REACH regulation, restrictions are imposed on harmful substances such as lead, mercury, cadmium, etc. that may be contained in decorative panels to ensure environmental protection and human health and safety.

Reliability test: Conduct impact test to simulate the impact resistance of the decorative panel of the car door under external impact, and check whether it will crack or fall off; There is also a durability test for opening and closing doors, which tests the firmness and durability of the connection between the decorative panel and the car door through repeated opening and closing operations.

Automobile sealing strip

International testing standards, such as ISO 13277, specify general requirements and test methods for rubber seals. There are standard requirements for the size, hardness, tensile strength, compression set, and other properties of automotive sealing strips.

Reliability test: Compression permanent deformation test, in which the sealing strip is compressed for a certain period of time, its recovery is measured, and its long-term sealing performance is evaluated; There is also an aging resistance test, which simulates the aging environment in actual use through thermal aging, ozone aging, etc., to test the performance changes and service life of the sealing strip.

Automotive rubber components

International testing standards: ISO 1629 is a standard for rubber nomenclature, ISO 37 is for the determination of rubber tensile properties, etc. There are specific standards for different rubber components, such as ISO 4250 for tires, which specifies their size, performance, and other requirements.

Reliability test: In addition to the aging resistance test and compression permanent deformation test in the above-mentioned sealing strips, there is also a dynamic fatigue test to simulate the dynamic stress situation of rubber components during vehicle operation, evaluate their anti fatigue performance and service life.

Automotive electronic components

International Testing Standard 1: ISO 26262 is an international standard for automotive functional safety, providing guidance and specifications for the design, development, and testing of automotive electronic systems. In addition, there are standards related to electromagnetic compatibility, such as CISPR 25, which specify the electromagnetic radiation and anti-interference requirements for automotive electronic equipment.

Reliability Test 1: Environmental stress testing includes temperature cycling, humidity testing, and vibration testing, etc; Electrical stress testing includes voltage fluctuation testing and electromagnetic compatibility testing; Long term aging testing includes high acceleration life testing and actual working condition simulation testing.

Automotive wiring harness components

International testing standards: Commonly used international standards include detailed testing specifications developed for different industries and product types, such as ISO and ASTM. For the free fall detection of automotive wire harnesses, there are corresponding requirements in the standard for drop height, frequency, and evaluation criteria.

Reliability Test 5: Free fall detection simulates the real environment of wire harnesses during transportation, installation, or accidental collisions to evaluate their impact resistance and structural integrity. In addition, there is a wear resistance test that simulates the friction that the wiring harness may generate with other components during vehicle operation, to test the wear resistance of its outer skin and the reliability of its internal wires.

Automotive paint film components

International testing standards, such as ISO 2409 which specifies the method for determining adhesion of paints and varnishes using the scratch test, and ISO 4624 which specifies the standard for determining adhesion of paint films using the pull-out method.

Reliability test: In addition to adhesion test, there is also weather resistance test, which uses artificial accelerated aging or natural exposure to inspect the color change, gloss retention, powdering degree, and cracking of the paint film under long-term environmental conditions such as light exposure, wind and rain; And chemical corrosion resistance test, using common chemicals such as gasoline, engine oil, cleaning agents, etc. to contact the paint film and observe whether there is discoloration, foaming, peeling and other phenomena.

Automotive piping components

International testing standard: ISO 1402 specifies the relevant requirements for pipes used in automotive brake systems, including materials, dimensions, performance, and other aspects. For fuel pipelines, ISO 1817 and other standards specify performance requirements such as fuel resistance and pressure resistance.

Reliability test: pressure test, applying a certain pressure to the pipeline to check for leaks, deformations, and other conditions; There is also pulse testing, which simulates the pulse pressure of fluid in the pipeline during vehicle operation, to evaluate the fatigue life and reliability of the pipeline. In addition, the vibration resistance test simulates the vibration of the vehicle during driving to test the sealing of the pipeline connection and the anti vibration performance of the pipeline itself.

Why choose general testing

Strong professional strength: The professional team of Tonggui Testing has a thorough understanding of international testing and certification standards and regulations for automotive materials and components, and can tailor accurate testing and certification solutions based on customer product characteristics to solve various technical problems encountered in the testing and certification process. Whether it's complex E/e-Mark certification instructions or strict Korean KC certification requirements, the team can handle them with ease.

Advanced equipment support: The company is equipped with internationally advanced testing equipment that can simulate various complex testing scenarios and meet the strict requirements of international testing and certification standards. From ICP-MS for material composition analysis to walk-in environmental testing chambers for simulated environmental testing, everything is available to ensure the accuracy and reliability of testing data, providing strong guarantees for customers to obtain certification smoothly.

One stop service experience: Tonggui Testing provides one-stop service, from project consultation to testing and certification completion, without the need to travel between multiple institutions. The company also provides value-added services such as regulatory policy interpretation and certification process guidance, effectively reducing customers' testing and certification time and economic costs.

Good reputation witness: Over the years, Tonggui Testing has helped numerous customers successfully enter the international market with professional services and high-quality testing and certification results, establishing a good reputation in the industry and becoming a reliable partner for customers to conduct international testing and certification of automotive materials and components.