WHAT ALL OF THE SECOND CLASS MECHANICAL AND ELECTRICAL INCLUDES: Relating to the field of optical communication technology, in particular, relating to tunable attenuators, optical switches, and tunable filters. In the present invention, the core elements in the optical switch, the tunable attenuator, and the tunable filter are all surface micromechanical structures in microelectromechanical systems technology, consisting of a thin film and cavities between the thin films. Optically all are in the form of multi-cavity Fabry-Perot interferometers. Each film is a multilayer dielectric film consisting of alternating high refractive index dielectric layers and low refractive index dielectric layers. The number of dielectric layers of each dielectric film has a certain interrelationship to ensure that the device has good optical characteristics. Due to the use of microelectromechanical systems technology, these devices can be mass produced and assembled easily. The power consumption of these devices is very low due to electrostatic actuation.
1, construction machinery, including: Germany Wick, imported power impact rammer, steel bar cutting machine, straightening machine, mixer and so on.
2, lifting machinery, including: forklifts, winches, Shanghai Jiangnan, Liuzhou electric jacks and so on.
Other electromechanical products: Makita electro-pneumatic tools, Japanese internal combustion engine wrenches, socket machines, rock drills, cutters, air compressors, Xi'an SIP motor soft starters, frequency conversion equipment, Shenzhen energy-saving electronic overcurrent thermal relays, counters, bearings and other one, two, three types of electromechanical products.
Gasoline generator sets: 0.5KW-15KW;
Diesel generator sets: 2KW-2000KW;
Water pump sets: 1/2 inch-16 inches;
Generator welding sets: 165A 900A.
Generator welding unit: 165A-900A.