... high-voltage module, resistant to moisture, earthquake, maintenance-free; 03.Modular with plug-in design, easy maintenance, reliability; 04.Use Ozone ... install this product by yourself anywhere. No need to hire any expert technician. No need of regular maintenance.3) It ... prolong the preserving time of food.e. It is equipped with the functions of sterilization, cleaning, decoloring, deodorization and ...