To ensure the consistency and reliability of product quality, Linterk has a modern production workshop, optical laboratory, high and low temperature laboratory, rain and salt spray laboratory, simulated transport vibration laboratory, aging laboratory, electrical performance laboratory and so on. In addition, we have independently developed and designed an advanced optical testing device, which can realize real-time feedback of Angle data with an accuracy better than 0.1 °, and realize automatic testing of constant horizontal 360 ° light intensity and instantaneous light intensity. There is no interference in the whole test process, so as to ensure accurate and correct test results.