ZRLK Testing Technology Co., Ltd., also known as Center Certification & Testing International, is a professional third-party testing and certification service agency headquartered in Shenzhen, China, with additional facilities in Dongguan. Founded in 2014 and drawing on over 15 years of industry expertise, the company specializes in providing comprehensive quality solutions, product testing, and system certification for global market access. ZRLK is recognized as a high-tech enterprise and holds prestigious accreditations including CNAS, CMA, and CBTL qualification.
The company maintains advanced laboratory facilities, including specialized chemical and battery labs, as well as an international-standard EMC laboratory equipped with semi-anechoic chambers and high-end instrumentation from manufacturers like Rohde & Schwarz and Agilent. ZRLK's core technical strengths lie in battery testing (covering lithium, power, and button cells), consumer electronics, and smart home appliances. Their service portfolio extends to automotive electronics, children's toys, LED lighting, IT/AV products, and wireless RF communication.
ZRLK facilitates a wide array of international certifications such as CE, FCC, UL, RoHS, CCC, PSE, and KC, ensuring compliance with safety, electromagnetic compatibility (EMC), and environmental standards across the Americas, Europe, Asia, and Australia. The firm serves a distinguished client base that includes industry leaders such as Huawei, Lenovo, TCL, ZTE, and BYD. Operating under ISO 9001 and ISO 14001 management systems, ZRLK provides professional technical support and one-stop certification solutions to enhance the global competitiveness of its B2B partners.
High-tech enterpriseRecognized as a high-tech or innovative enterprise.
Eco-friendly supplierUses sustainable and eco-friendly materials.
Ntek Testing Technology Co., Ltd. is a leading third-party testing and certification service provider headquartered in China. Established in 2003 with its primary chemical and physical testing facility in Dongguan founded in 2008, the company operates over 10,000 square meters of advanced laboratory space. Ntek maintains a significant presence with more than 20 branch offices across mainland China, serving a diverse global clientele that includes major brands such as TCL, Midea, and Chanel.
The company specializes in a comprehensive range of compliance services, including EMC, safety, chemical, and reliability testing. Their specialized laboratories are equipped with high-end instrumentation from manufacturers like Rohde & Schwarz and Agilent to support industries such as IT, home appliances, lighting, automotive electronics, and industrial equipment. Ntek provides extensive testing for hazardous substances (RoHS, REACH), food contact materials, toys, textiles, and footwear, ensuring products meet international standards like EN71, ASTM F963, and CPSIA.
Ntek holds numerous prestigious accreditations, including CNAS, CMA, and CPSC recognition, and is authorized by international bodies such as TUV and ITS. They facilitate global market access through a wide array of certifications, including CE and GS for Europe; UL, FCC, and ETL for North America; CCC and PSE for Asia; and SAA and Global Mark for Australia. As a professional service and trading company, Ntek offers end-to-end technical support, raw material traceability, and quality control solutions to manufacturers, retailers, and wholesalers worldwide.
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Hangzhou Mituolinke Technology Co., Ltd.
🇨🇳 China
202211-50 peopleTrading Company
High-tech enterprise
OEM manufacturer
High product rating
Shipments
5
Key customer
MATTHEW NDT
Key market
Asia
Review
4.9
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