Founded in 1984, as the manufacturing process control of the optical instrument leader optek-Danulat GmbH has been committed to the global users of all walks of life to provide a reliable, long-term stable operation, high performance, high quality products. Optek's products include multi-functional controllers, turbidity / chroma / UV sensors, and are widely used in biotechnology, chemical, petrochemical, paper and other fields. Optek products comply with international standards (ISO9001), industry standards (FM/ATEX certification) or company standards. At the same time, Optek also provides users with the best pre-sales, after-sales service and technical support. So far, Optek has more than 30 thousand applications in the world.