Topstar Technology Industrial Co., Ltd. is a professional fiber optical module manufacturer integrating R&D, production, sales and after service. We own a 100,000-class dust-free workshop covering an area of more than 3,000 square meters. Our team currently have 30 technical R&D personnels and more than 200 workers. Our advantage is the production of commercial and industrial-grade optical modules. We do aging testing, high and low temperature testing and compatibility testing strictly accordance with production standards, and offer a three-month replacement, 3-year warranty after-sales service.