In order to provide better product quality to SENTEST instrument users, we expect to change the NS11 product process and accept new product orders from 2020/06/01; NS11 product housing will be changed from the original silver to hard oxidized black, other specifications have not changed, Hereby notified ! If you still have silver NS11 product needs, please inform our business unit and place an order before 2020/06/01; our company will ship all NS11 products with a new black housing after 2020/06/01 !