Quality assurance system, Shenzhen Dano has advanced detection apparatuses, such as Agilent and waters branded gas phase and liquid phase with high efficiency and kinds of detection methods. Besides that, there are also infrared detection, ultraviolet detection, deadstop titration, minim water determination of apparatuses, and so on. In the company there are professional QA staff, and production procedure is strictly monitored so as to ensure production quality.