SEIKO FIRE is a professional hi-tech enterprise which is registered as ISO9001, specializing in designing, manufacturing, and selling optic fiber equipment & test instrument.
Qingdao Sunet Technologies Co., Ltd (SUNET), estalished in 2006 Year(which located in beatiful city QINGDAO, Shandong Province), is a high-tech enterprise and a leading worldwide provider for Fiber Optic Components.
We are a small "Technical" Company in Shanghai, China. We can help customer create their own brand-new OTDRs. We are not good at Marketing or sales, but we are interested in High Technologies Development. Till now, most of Chinese OTDRs are made by us, and our OTDRs are also adopted by Telecom Carrier, high education school and scientific institution.