... module, resistant to moisture, earthquake, maintenance-free; 03.Modular with plug-in design, easy maintenance, reliability; 04.Use Ozone-specific ... ABS engineering plastic, high hardness; 06.3C certification standard power cord; 07.Three colors of the aeration stones of ... prolong the preserving time of food.e. It is equipped with the functions of sterilization, cleaning, decoloring, deodorization and ...