FzCenter Optoelectronic Technology Co.,Ltd ,is direct manufacturer which have a R&D term, Professionals engaged in the production of optical precision instruments.Like optical refractometer, fiber microscope. Company of "first integrity and quality is the key’’ purpose with customers in the long-term cooperation.Through several years development,We got our own main products .Inclouding Gem Refractometer, Salinity refractometer，Brix Refractometer，Freezing instrument，PH meter,Fiber fault detection pen, Fiber Microscope,The corporation has a professional design also supply these products parts.Our customers mainly in the United States, Hong Kong, Singapore and domestic,and senercialy look forward you joinning us. Meanwhile, we sincerely welcome OEM/ODM users to contact with us.