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    • zjdyjd GC4-3150A round club contact , circularity contact;T2 copper binding contact

      Model: GC4-3150A round plum-type contact, the number of contacts :30 •the spring piece is treated with electrophoretic primer so as to avoid oxidation and rustiness •thick silvering with strong abrasion resistance •anti-tarnish treatment to avoid oxidation and shedding of silver coating •aluminium protective casing can play the role of fastness and protection to guard against the distortion and falling off of spring pieces •the recommended size of the depth of penetration of static contact: 22±2mm

    • Products: round club contact T2 copper binding contact circularity contact

    • zjdyjd high-voltage fuse, drop-out fuse cutout, (12KV-35KV)fuse cutout

      Drop-out fuse cutout is the most common short-circuit protection switch as a part of distribution wire’s branch line and transformer. It’s economic, easy to operate and apt to adapt to the outdoor environment. Installed in the branch line of the distribution wire will narrow the power scope; because of the distinct disconnect point, it has the function of an isolating switch and brings a safe operating environment for lines and equipment maintenance. 1. Surrounding environment:-30°～+40°, 2. Altitude: no more than 1000m, 3. Power frequency:50±2Hz, 4. earthquake degree: less than 7, 5. Maximum wind speed: 35m/s.

    • Products: high-voltage fuse drop-out fuse cutout (12KV-35KV) fuse cutout

    • KBSG mining explosion-proof dry type transformer

      Summarize: This series product can be used in the mine with hazard of explosion due to methane gas and coal-dust, as the distribution equipment of underground mining mechanical equipment. Technical Parameter: Rated Voltage: Primary Voltage: 6KV, 10KV Secondary Voltage: 400v, 693v, 1200v, 3450v Rated Capacity; 50、100、200、315、400、500、630、800、1000、1250、1600、2000、2500、3150、4000（KVA） Explosion proof form: mining flame-proof exdl Use environmental conditions: Altitude should less than 1000 meters Environmental Temperature: The highest temperature:＋40℃ The highest average temperatures: ＋40℃ The highest annual average temperature: +20℃ The lowest temperature:-20℃ Relative humidity of the air does not exceed 95% In the mine with methane gas mixture, coal-dust and explosion danger Environment without severe turbulence, vibration, the vertical inclination less than 15 degree Without gas and steam which corrode metal and destroy insulation The power supply voltage waveform approximates sine wave Three-phase power supply voltage approximate symmetrical Product Characteristic: The iron core use high-permeability and high quality cold rolled steel sheet, small juncture, low dissipation, and little noise. Using new materials, the line between layers, the turn- to-turn using Du Pont NOMEX-410 insullated material, heat-resisting class H, coil vacuum leaching paint. Coil impregnation paint fully permeate deep, 160-170℃ drying curing, high mechanical strength transformer body vacuum drying. The body surface covered by a layer of damp proof and corona-proof paint, has good insulation performance. The high and low voltage sides use microcomputer integrated protection, realize the double protective function, have protection to short circuit, over-current, leakage, overvoltage and under voltage, and realize PLC control and man-machine dialog functions.

    • Products: transformer

    • KBSGZY mining explosion-proof transformer substation

      Summarize: This series product can be used in the mine with hazard of explosion due to methane gas and coal-dust, as the distribution equipment of underground mining mechanical equipment. Technical Parameter: Rated Voltage: Primary Voltage: 6KV, 10KV Secondary Voltage: 400v, 693v, 1200v, 3450v Rated Capacity; 50、100、200、315、400、500、630、800、1000、1250、1600、2000、2500、3150、4000（KVA） Explosion proof form: mining flame-proof exdl Use environmental conditions: Altitude should less than 1000 meters Environmental Temperature: The highest temperature:＋40℃ The highest average temperatures: ＋40℃ The highest annual average temperature: +20℃ The lowest temperature:-20℃ Relative humidity of the air does not exceed 95% In the mine with methane gas mixture, coal-dust and explosion danger Environment without severe turbulence, vibration, the vertical inclination less than 15 degree Without gas and steam which corrode metal and destroy insulation The power supply voltage waveform approximates sine wave Three-phase power supply voltage approximate symmetrical Product Characteristic: The iron core use high-permeability and high quality cold rolled steel sheet, small juncture, low dissipation, and little noise. Using new materials, the line between layers, the turn- to-turn using Du Pont NOMEX-410 insullated material, heat-resisting class H, coil vacuum leaching paint. Coil impregnation paint fully permeate deep, 160-170℃ drying curing, high mechanical strength transformer body vacuum drying. The body surface covered by a layer of damp proof and corona-proof paint, has good insulation performance. The high and low voltage sides use microcomputer integrated protection, realize the double protective function, have protection to short circuit, over-current, leakage, overvoltage and under voltage, and realize PLC control and man-machine dialog functions.

    • Products: transformer

    • Radix Stemonae P.E.

      Product Name:Radix Stemonae P.E. CAS No.:34154-81-9 Appearance: Brown yellow powder Odor: Special smell Packing specification: 25kg / drum Specifications Model: 4:1 Usage: Under the lungs and gas-cough, pesticides.

    • Products: plant extracts Radix Stemonae P.E.

    • Quartz crystal materials

      The picture which are showed is several kinds of quartz crystal craft, we can process them into defferent size according to the customer's request. Zibo Yufeng is one of the manufacturers in China that manufactures raw materials as well as end products in the field of crystal electronics, our main products are low corrosive tunnel quartz crystal, optical crystal, crystal wafer, frequency blank, crystal resonator such as 49/US and 5032SMD type etc. We have total 158 sets autoclave to grow artificial quartz crystal in our factory, then we use wire saw cutting machine to cut into deferent wafer for deferent use. Charactristic: Etch channel: IEC758 grade 3 100pcs/cm2 Q-Value1.8×106 Inclusive density: IEC758 Ia standard The crack are not more than 0.5mm No strain , no striae. Application: Synthetic quartz crystal is a good pizeoelectronics materials to be widely used to manufacture various types of quartz resonators, filter, energy transducer and so on. It is an ideal material which can be used to make optical prism, lens, opitcal rotation etc, it can also be processed into various types of crystal craft products etc. We can also produce the special quartz crystal with other specifications and dimensions as customers requirement. In past several years, our company has got the certification of ISO9001, ISO14001, TS16949 etc. Our crystal materials and optical crystal are exported to NDK , KDS, and the customers of Europe and USA etc. Stock size: Type X-size(mm) Y-size(mm) Z-size(mm) Z-block 12-140 90-220 34-50 Y-block 46-70 210±10 20-55

    • Products: quartz crystal

    • HC-49/S Crystal resonator

      The picture which are showed is one kind of crystal resonator (49/S). Zibo Yufeng is one of the manufacturers in China that manufactures raw materials as well as end products in the field of crystal electronics, our main products are low corrosive tunnel quartz crystal, optical crystal, crystal wafer, frequency blank, crystal resonator such as 49/US and 5032SMD ,3225SMD type etc Application: Crystal resonator are the basic frequency element in electronic industry, widely used in the fields of aviation, space, office antomation, white goods and wireless communication,etc. In the past several years, our company has got the certification of ISO9001, ISO14001,TS16949 etc. Our products are exported to Sumsong, LG, KDS, NDK, Suny , Chungho and USA customers etc. Characteristic: Frequency Range(MHz) 3.200-60.000 Mode of Vibration 3.200-30.000MHz Fundamental 27.00-60.000MHz 3rd Overtone Drive Level (mW) 0.1 TYPICAL Load Capacitance 8pf to 32pf or Series Frequency Tolerance (ppm) ±5,±10, ±30, ±50(at 25) Shunt Capacitance 7MAX Operating Temperature Range 0 to +70 Standard Frequency Stability (refer to 25) ±30ppm Standard Storage Temperature Range -40 to +85 Aging (First Year) ±5ppm (at 25) Other non-standard products are available according to customers' requirements

    • Products: crystal resonator quartz resonator

    • one world 2000watts power inverter

      Description: Modified sine wave inverter: IVT-1000W, 1200W, 1700W Model no. Spec. IVT-1000WIVT-1200WIVT-1700W DC 12V DC 24V DC 12V DC 24V DC 12V DC 24V Continuous output power 1000W 1200W 1700W Surge output power 2000W 2400W 3000W Input voltage DC 10V~16V DC 20V~31V DC 10V~16V DC 20V~31V DC 10V~16V DC 20V~31V Output voltage AC 100V, 110V, 120V, 220V, 230V or 240V Output voltage regulation +5% / -8% +5% +5% / -8% +5% +5% / -8% +5% Output waveform Modified sine wave Output frequency 50, 55 or 60Hz Standby current Efficiency 85~90% Protections Output short(by circuit), High voltage input, Battery low alarm, Battery low shutdown, Battery polarity reverse(by fuse), Over load, Over temperature High voltage input shutdown DC 16V + 0.5V DC 31V + 0.5V DC 16V + 0.5V DC 31V + 0.5V DC 16V + 0.5V DC 31V + 0.5V Battery low alarm DC 10.5V + 0.5V DC 21V + 0.5V DC 10.5V + 0.5V DC 21V + 0.5V DC 10.5V + 0.5V DC 21V + 0.5V Battery low shutdown DC 10V + 0.5V DC 20V + 0.5V DC 10V + 0.5V DC 20V + 0.5V DC 10V + 0.5V DC 20V + 0.5V Cooling By fan(fan x 2 pcs) / ruw on 40oC Thermo protect 65 + 5oC Fuse 30A x 4 pcs 15A x 4 pcs 30A x 5 pcs 15A x 5 pcs 30A x 8 pcs 15A x 8 pcs AC outlet Three AC outlet(USA socket), Two AC outlets(European, Australian & UK socket), One AC outlet(universal socket) Size(L x W x H) 320 x 210 x 81mm 350 x 210 x 81mm 460 x 210 x 81 mm Weight 3.7 kgs 3.9 kgs. 5 kgs. Modified sine wave inverter w/battery charger: IVT-1000C, 1200C & 1700C Model no. Spec. IVT-1000CIVT-1200CIVT-1700C DC 12V DC 24V DC 12V DC 24V DC 12V DC 24V Continuous output power 1000W 1200W 1700W Surge output power 2000W 2400W 3000W Input voltage DC 10V~16VDC 20V~31V DC 10V~16V DC 20V~31V DC 10V~16V DC 20V~31V Output voltage AC 100V, 110V, 120V, 220V, 230V or 240V Output voltage regulation +5% / -8% +5% +5% / -8% +5% +5% / -8% +5% Output waveform Modified sine wave Output frequency 50, 55 or 60Hz Standby current Efficiency 85~90% Protections Output short(by circuit), High voltage input, Battery low alarm, Battery low shutdown, Battery polarity reverse(by fuse), Over load, Over temperature High voltage input shutdown DC 16V + 0.5V DC 31V + 0.5V DC 16V + 0.5V DC 31V + 0.5V DC 16V + 0.5V DC 31V + 0.5V Battery low alarm DC 10.5V + 0.5V DC 21V + 0.5V DC 10.5V + 0.5V DC 21V + 0.5V DC 10.5V + 0.5V DC 21V + 0.5V Battery low shutdown DC 10V + 0.5V DC 20V + 0.5V DC 10V + 0.5V DC 20V + 0.5V DC 10V + 0.5V DC 20V + 0.5V Cooling By fan(fan x 2 pcs) / run on 40oC Thermo protect 65 + 5oC Fuse 30A x 4 pcs 15A x 4 pcs 30A x 5 pcs 15A x 5 pcs 30A x 8 pcs 15A x 8 pcs Transfer time AC line to inverter 4ms, Inverter to AC line 30ms AC outlet Three AC outlet(USA socket), Two AC outlets(European, Australian & UK socket), One AC outlet(universal socket) Size(L x W x H) 270 x 1500 x 130mm Weight 4.3 kgs.

    • Products: 200watts power inverter 2000watt ups 2000watt charger

    • KEYESDE AT-MH97 Hotel Multimedia Connector

      MediaHub (APST-MH desktop and into the wall series) Multimedia Access Solution MediaHub Multimedia Connectors create first-class multimedia audio and video connectivity solutions for you. With APST MediaHub products, you can rearrange link ports of your parlor, to make it more convenient for guests to use. When taking a travel or business trip, users usually take portable computers, audio and video devices and game devices. Actually, MediaHub can provide you with hubs, which can link iPod, mp3, DVD machine, Playstation, Xbox, portable computers, digital cameras and digital video cameras, and enable you to make full use of IRES (indoor recreational facilities). MediaHub APST-MH series You can simply apply MediaHub by plugging in, and you can play videos or music, or play games through IRES, rather than disconnecting any existing cable connections. As a result, you can not only avoid expensive costs of cable modification, but also avoid damage to the connector or plugs. Except the convenience of internet, users can preview screen with high-definition television and IRES, play music through indoor sound system, browse the family photo album, or play favorite games or work with the wide-screen display. Functions and advantages of MediaHub ● It’s easy and convenient to rearrange audio and video link ports of the parlor. ● It’s equipped with automatic sensing and/or manual switch. ● It’s easy to track the appropriate channel automatically, with intelligent active device technology. ● It’s plug-and-play and easy to use, without the need of extra installation or allocation. ● Without disconnect existing IRES connections. ● It is capable of automatic sensing through a series of directives given by the STB or TV. ● The audio jack of 3.5mm can plug and play iPod, MP3 player and laptop headsets. ● Dedicated VGA connectors for portable computers ● Dedicated USB socket for mobile phones and iPod etc., which is used to charge. ● Video and S-video multi-sockets for connecting game devices and video cameras. ● Equipped with high-resolution HDMI input ports ● Reduce support services and costs Users can plug and play the related fittings through IRES of MediaHub. On one hand, it can spare engineers from rearranging network and cable lines; on the other hand, it can avoid damage to the connector. It’s very easy to fix the plug-and-play link port, which can be fixed on the wall or desk. Technical specifications of MediaHub ● RCA jack (white / left loudspeaker - red / right speakers yellow / video signal port) ● 5-Video jack ● 3.5mm audio is input the Minijack interface. ● VGA jack - (1) HDMI port ●USB port can provide 5V electric current Specifications of MediaHub ● Weight: 0.9kg ● External panel size: 214mm (length) x 84mm (width) ● Internal size: 184mm (length) x 68mm (width) x 45mm (height) ● Into the wall series: 186mm (length) x 73mm (width) x 45mm (height) ● Desktop series: 186mm (length) x 73mm (width) x 45mm (height) ● Color: connectivity panel is black, silver inclined plate on both sides, and also you can order other styles. ● Material: ABS plastic ● Optional inclined plate color

    • Products: hotel connector multimedia connector hotel multimedia connector

    • KEYESDE KD-MH01 Hotel Multimedia socket

      MediaHub (APST-MH desktop and into the wall series) Multimedia Access Solution MediaHub Multimedia Connectors create first-class multimedia audio and video connectivity solutions for you. With APST MediaHub products, you can rearrange link ports of your parlor, to make it more convenient for guests to use. When taking a travel or business trip, users usually take portable computers, audio and video devices and game devices. Actually, MediaHub can provide you with hubs, which can link iPod, mp3, DVD machine, Playstation, Xbox, portable computers, digital cameras and digital video cameras, and enable you to make full use of IRES (indoor recreational facilities). MediaHub APST-MH series You can simply apply MediaHub by plugging in, and you can play videos or music, or play games through IRES, rather than disconnecting any existing cable connections. As a result, you can not only avoid expensive costs of cable modification, but also avoid damage to the connector or plugs. Except the convenience of internet, users can preview screen with high-definition television and IRES, play music through indoor sound system, browse the family photo album, or play favorite games or work with the wide-screen display. Functions and advantages of MediaHub ● It’s easy and convenient to rearrange audio and video link ports of the parlor. ● It’s equipped with automatic sensing and/or manual switch. ● It’s easy to track the appropriate channel automatically, with intelligent active device technology. ● It’s plug-and-play and easy to use, without the need of extra installation or allocation. ● Without disconnect existing IRES connections. ● It is capable of automatic sensing through a series of directives given by the STB or TV. ● The audio jack of 3.5mm can plug and play iPod, MP3 player and laptop headsets. ● Dedicated VGA connectors for portable computers ● Dedicated USB socket for mobile phones and iPod etc., which is used to charge. ● Video and S-video multi-sockets for connecting game devices and video cameras. ● Equipped with high-resolution HDMI input ports ● Reduce support services and costs Users can plug and play the related fittings through IRES of MediaHub. On one hand, it can spare engineers from rearranging network and cable lines; on the other hand, it can avoid damage to the connector. It’s very easy to fix the plug-and-play link port, which can be fixed on the wall or desk. Technical specifications of MediaHub ● RCA jack (white / left loudspeaker - red / right speakers yellow / video signal port) ● 5-Video jack ● 3.5mm audio is input the Minijack interface. ● VGA jack - (1) HDMI port ●USB port can provide 5V electric current Specifications of MediaHub ● Weight: 0.9kg ● External panel size: 214mm (length) x 84mm (width) ● Internal size: 184mm (length) x 68mm (width) x 45mm (height) ● Into the wall series: 186mm (length) x 73mm (width) x 45mm (height) ● Desktop series: 186mm (length) x 73mm (width) x 45mm (height) ● Color: connectivity panel is black, silver inclined plate on both sides, and also you can order other styles. ● Material: ABS plastic ● Optional inclined plate color

    • Products: hotel socket multimedia socket hotel multimedia socket

    • KEYESDE AT-MH98 Multimedia Connector

      Specification and major technique parameter MediaHub (APST-MH desktop and into the wall series) Multimedia Access Solution MediaHub Multimedia Connectors create first-class multimedia audio and video connectivity solutions for you. With APST MediaHub products, you can rearrange link ports of your parlor, to make it more convenient for guests to use. When taking a travel or business trip, users usually take portable computers, audio and video devices and game devices. Actually, MediaHub can provide you with hubs, which can link iPod, mp3, DVD machine, Playstation, Xbox, portable computers, digital cameras and digital video cameras, and enable you to make full use of IRES (indoor recreational facilities). MediaHub APST-MH series You can simply apply MediaHub by plugging in, and you can play videos or music, or play games through IRES, rather than disconnecting any existing cable connections. As a result, you can not only avoid expensive costs of cable modification, but also avoid damage to the connector or plugs. Except the convenience of internet, users can preview screen with high-definition television and IRES, play music through indoor sound system, browse the family photo album, or play favorite games or work with the wide-screen display. Functions and advantages of MediaHub ● It’s easy and convenient to rearrange audio and video link ports of the parlor. ● It’s equipped with automatic sensing and/or manual switch. ● It’s easy to track the appropriate channel automatically, with intelligent active device technology. ● It’s plug-and-play and easy to use, without the need of extra installation or allocation. ● Without disconnect existing IRES connections. ● It is capable of automatic sensing through a series of directives given by the STB or TV. ● The audio jack of 3.5mm can plug and play iPod, MP3 player and laptop headsets. ● Dedicated VGA connectors for portable computers ● Dedicated USB socket for mobile phones and iPod etc., which is used to charge. ● Video and S-video multi-sockets for connecting game devices and video cameras. ● Equipped with high-resolution HDMI input ports ● Reduce support services and costs Users can plug and play the related fittings through IRES of MediaHub. On one hand, it can spare engineers from rearranging network and cable lines; on the other hand, it can avoid damage to the connector. It’s very easy to fix the plug-and-play link port, which can be fixed on the wall or desk. Technical specifications of MediaHub ● RCA jack (white / left loudspeaker - red / right speakers yellow / video signal port) ● 5-Video jack ● 3.5mm audio is input the Minijack interface. ● VGA jack - (1) HDMI port ●USB port can provide 5V electric current Specifications of MediaHub ● Weight: 0.9kg ● External panel size: 214mm (length) x 84mm (width) ● Internal size: 184mm (length) x 68mm (width) x 45mm (height) ● Into the wall series: 186mm (length) x 73mm (width) x 45mm (height) ● Desktop series: 186mm (length) x 73mm (width) x 45mm (height) ● Color: connectivity panel is black, silver inclined plate on both sides, and also you can order other styles. ● Material: ABS plastic ● Optional inclined plate color

    • Products: multimedia connector

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