ultrasonic equipment was used as shown in principle in Fig. 1. A piezoelectric ultrasonic transducer transforms a sinusoidal electrical voltage into mechanical longitudinal resonance vibration, where the resonance frequency of the equipment is 20 kHz.
It is suitable for sucking heavy polluted working environment, such as: aerosol in dentistry, dermatology, atomization room, gynecology, laboratory, solder fumes and dusty gas or light dust.
Electrostatic epoxy powder coating is a material coating process, where dry, free-flowing powders are applied to a target electrostatically and then cured with heat to allow it to flow and form a “skin”.
Hybrid epoxy polyester powder coating possesses good chemical and mechanical properties as well as good appearance and outstanding over baking resistance.