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.
This Custom Jewelry Display Cabinet is made of high-quality MDF or plywood with colored baking paint, so its surface is not only smooth and glossy, but also waterproof and anti-corrosion.
Luyi-Forge offers wide range of spear tops or spearheads for gates. Spearheads for gates can provide both protection and beauty for wrought iron gate, they are the most commonly used wrought iron decoration for your house.
magnesium alloy ingot AZ91D High strength and corrosion resistance with ASTM standard best quality AZ91D alloy Chemical composition AZ91D: Mg remainder Al 8.5%-9.5% Zn 0.45%-0.90% Mn 0.17%-0.40% Si 0.05% Fe 0.004% Cu 0.025% Ni 0.001% Be 5-15ppm Other each
TPO Roofing Waterproof Membrane
Products Description
The Thermoplastice Polyolefin (TPO) waterproof membranes are the most popular waterproof materia...