Qingdao Grandlink International Trade Co., Ltd. is a wholly-owned subsidiary of Qingdao Novker Communications Technology Co., Ltd., which mainly exports NK series products.

Novker, which is national high-tech enterprise, has a strong R&D and production team. Novker has passed ISO9000 quality management system certification, EU compulsory CE certification and intellectual property management system certification, and now has 4 invention patents, 24 utility model patent, 28 appearance patents and 38 software copyrights. Novker products have passed the test and certification of Taier laboratory and China Saibao laboratory. NK series OTDR have won the title of "Specialization, Refinement, Originality and Novelty" product in Qingdao.

The testing equipment mainly includes fiber optic fusion splicer series,optical time-domain reflectometer series,broadband installation and maintenance series,machine room renovation series,weak light rectification series,mute resource management series,5G wavelength division series,fiber optic sensing series,spectrum analyzerseries and other products,which are widely used in the construction,acceptance,maintenance,and trouble-shooting of optical communication networks.

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