Offers to Sell

The biconcave lens, also named double concave lens, is usually made of flint glass and used for beam divergence. It’s focal length is negative but the parallel incident ray diverges outward. The two sides of the biconcave lens curvature radius can be equal or not. Combined with plano-convex lens, it is generally used in beam expanders, projection optical systems and optical viewers, etc. Oplens can not only customize the common plano-concave lens of N-BK7 or fused quartz, but also customize the biconcave lens of any glass material. You are welcome to contact us for customized biconcave lenses.

Minimum Order: 10 long tons

A plano-concave lens is a lens that has a flat surface on one side and a concave surface on the other side. The focal length of a plane-concave lens is negative, allowing the beam to diverge.  Therefore, it can be used in optical system for beam expansion, light projection or to increase focal length.   Oplens can not only customize the plano-concave lens with common materials of N-BK7 (Shott) and fused silica, but also customize the plano-concave lens of any glass material.     You are welcome to contact us for customized plano-concave lenses. Parameters Materi , al: Surface Flatness: Scratch/Dig: Eccentricity: Foca , l Length Tolerance Diameter Tolerance: Thickness Tolerance: Clear Aperture: Coating: Diameter Range: Optical Glass < λ/5 @ 633nm < 40/20 (both sides) ≤ 1arcmin < ± 1% < + 0.00/ - 0.02mm < ± 0.05 ≥ 95% of diameter AR OR BBAR  5~260mm

Minimum Order: 10 long tons

Oplens Plano-convex lens is an optical lens in which one side of the lens is flat and the other side is convex. The focal length of plano-convex is positive, mainly for the role of focusing. The collimating beam can be gathered on the rear focus or the point light source can be transformed into a collimating beam. Plano-convex lenses are widely used in optical display system, optical projection system, optical imaging system and laser measurement system.   Oplens can not only customize the plano-convex lens with common materials of N- BK7 (Shott) and fused silica, but also customize the plano-convex lens of any glass material.     Parameters Material: Surface Flatness: Scratch/Dig: Eccentricity: Foca , l Length Tolerance Diameter Tolerance: Thickness Tolerance: Clear Aperture: Coating: Diameter Range: Optical Glass < λ/5 @ 633nm < 40/20 (both sides) ≤ 1arcmin < ± 1% < + 0.00/ - 0.02mm < ± 0.05 ≥ 95% of diameter AR OR BBAR  5~260mm Oplens is one of leading optical elements and spherical lens manufacturer. We insist on supply high precision optical products with consistent quality and professional serve. You are welcome to contact us for customized plano-convex lenses.

Minimum Order: 10 long tons

Negative meniscus lens A meniscus lens is a lens with two spherical surfaces, convex on one side and concave on the other. The lens provides a smaller beam diameter to reduce beam waste and spherical aberration. When one meniscus is combined with another lens, the focal length is shortened and the numerical aperture of the system is increased. This reduces image distortion and improves image resolution. There are two types of meniscus lenses: ● Positive meniscus lens The positive meniscus lens is used for applications requiring small focal numbers (less than 2.5). For focal lengths between 2.5 and 10, a meniscus lens minimizes spot size and improves image quality. The concave side curvature of a positive lens is smaller and the convex side curvature is larger. Frequently used for beam focusing applications Minimizes the increase in spherical aberrations for multi-element systems ● Negative meniscus lens The negative meniscus lens is used for applications using infrared materials with a high refractive index. These lenses serve as substitutes for other negative lenses with greater curvature on the concave side and less curvature on the convex side. They are used in beam spreading applications where minimal spherical aberration is required. Frequently used for beam expanding applications Minimizes the increase in spherical aberrations for multi-element systems Parameters Material  Optical Glass Surface Flatness  < λ/5 @ 633nm Scratch/Dig  < 40/20 (both sides) Eccentricity  ≤ 1arcmin Focal Length Tolerance  < ± 1% Diameter Tolerance  < + 0.00/ - 0.02mm Thickness Tolerance  < ± 0.05 Clear Aperture  ≥ 95% of diameter Oplens provide custom optical components, we can custom sizes and shapes. If you are interested in any of our products, please click here.

Minimum Order: 10 long tons

A Combined peanut shelling and cleaning machine is equipment that separates peanut shells and kernels. In general, the peanut shelling unit includes a cleaning machine. The cleaning machine is a device that removes the impurities in the shelled peanuts in advance. Impurities are generally clods, stones, peanut seedlings, and leaves. The output of the peanut shelling unit is generally relatively large. We have four models of 6BHX-1500, 6BHX-3500, 6BHX-16000 and 6BHX-20000. Each model handles different volumes. Customers can choose the machine model that suits them according to their needs.

Minimum Order: 1 bags

This tracker is a newly product based on the GSM / GPRS network and GPS satellite positioning system, which set multiple functions of security, positioning, monitoring surveillance, emergency alarms and tracking in its entirety. Multiple Tracking Ways: *Track by SMS with latitude and longitude *Real track by SMS on PDA Cell phone with the maps link. *Web based online tracking on PC at our server www.gpstrackerxy.com. *IOS and Android APP Function Description: *Unique mini size (6.0*3.5*1.8cm), waterproof IP67 *Built-in GSM, GPS antenna, Shock sensor. *Power supply: 8V - 40V, can use for vehicle, motorcycle, E-bike, Truck etc. *Google maps GPS car tracking system*Get location in real street/address name, send "address+pas Google maps GPS car tracking system *Remote Engine-stop and Resume(for BC) *Tracking function by timing and frequency *Authorized number added and deleted function *Geo-fence *Door/ACC Alarm *Movement alert *Over speed alarm. *Power supply disconnection alarm. *Low battery alarm function *Check the vehicle status *ACC ALARM, Shock ALARM *Alarm without GSM network service *Less GPRS traffic *Automatic update positions of vehicle turns *GPS blind area alarm *Remote controller function ( for C only) *Sleep mode Optional accessories: *Alarm siren (for C only) Specifications: DIM.6.0*3.5*1.8cm& , lt; , br>Weight:50g Network:GSM/GPRS Band frequency:850/900/1800/1900Mhz GPS sensitivity:-165dBm GPS accuracy:5m Power supply:8V - 40V Back up battery: Chargeable 3.7V 180mAh

Minimum Order: 50

GPS403 This tracker is a newly product based on the GSM / GPRS network and GPS satellite positioning system, which set multiple functions of security, positioning, monitoring surveillance,emergency alarms and tracking in its entirety. Multiple Tracking Ways: *Track by SMS with latitude and longitude *Real track by SMS on PDA Cell phone with the maps link. *Web based online tracking on PC at our server. *IOS and Android APP Function Description: *Update firmware over-the-air (OTA) *Mini and waterproof design *Built-in GSM, GPS antenna, Shock sensor. *Google maps GPS car tracking system *Support fuel sensor for fuel level monitor *Get location in real street/address name, send "address+pas Google maps GPS car tracking system with remote controller GPS tracker sword to tracker. *Location Based Service. *Remote Engine-stop and Resume. *Tracking function by timing and frequency *Authorized number added and deleted function *Support hidden alarm and monitor function *Geo-fence *Door / ACC Alarm *Movement alert. *Over speed alarm. *Power supply disconnection alarm. *Low battery alarm function *Check the vehicle status *Set up DOOR ALARM, ACC ALARM, Shock ALARM *Alarm without GSM network service *Less GPRS traffic *Automatic update positions of vehicle turns *GPS blind area alarm *Configure heartbeat package interval Specifications: DIM.:83*54*26mm Weight:7 , 0g Network:GSM/GPRS/LTE Band 4G: B1/B2/B3/B4/B5/B7/B8/B12/B17/B20/B40 Band 2G: 1900/1800/900/850MHz GPS Sensitivity:-159dBm GPS Accuracy:5m Voltage of car power system: 12 V -24V Backup battery:Chargeable 3.7V 350mAh Li-ion battery Storage Temp.:-40°C to +85°C Operation Temp.:-20°C to +65°C Humidity:5%--95% non-condensing Warranty: 1. All products have been strictly Quality Checked in house before packing. 2. All products have been well packed before shipping. 3. One year warranty is provided for all models. We will bear maintenance cost during warranty.

Minimum Order: 50

This tracker is a newly product based on the GSM / GPRS network and GPS satellite positioning system, which set multiple functions of security, positioning, monitoring surveillance,emergency alarms and tracking in its entirety. Multiple Tracking Ways: *Track by SMS with latitude and longitude *Real track by SMS on PDA Cell phone with the maps link. *Web based online tracking on PC at our server. * IOS and Android APP Function Description: *Mini and waterproof design *Built-in GSM, GPS antenna, Shock sensor,elegant appearance. *Google maps GPS car tracking system *Support fuel sensor for fuel level monitor *Get location in real street/address name, send "address+pas Google maps GPS car tracking system with remote controller GPS tracker sword to tracker. *Location Based Service. *Remote Engine-stop and Resume. *Tracking function by timing and frequency *Authorized number added and deleted function *Support hidden alarm and monitor function *Geo-fence *Door / ACC Alarm *Movement alert. *Over speed alarm. *Power supply disconnection alarm. *Low battery alarm function *Check the vehicle status *Set up DOOR ALARM, ACC ALARM, Shock ALARM *Alarm without GSM network service *Less GPRS traffic *Automatic update positions of vehicle turns *GPS blind area alarm New Functions: 1. ACC working inform when track with unlimited times upon time interval 2. Decide how many times of alarm message 3. Calibration of fuel sensor 4. Built in Acceleration Sensor Alarm Optional accessories: * Fuel sensor for monitor fuel * Alarm siren * SD card Specifications: DIM.:83*54*26mm Weig , ht:70g Network:GSM/GPRS Band:850/900/1800/19 , 00Mhz GPS Sensitivity:-159dBm GPS Accuracy:5m Voltage of car power system: 12 V -24V Backup battery:Chargeable 3.7V 350mAh Li-ion battery Storage Temp.:-40°C to +85°C Operation Temp.:-20°C to +65°C Humidity:5%--95% non-condensing

Minimum Order: 50

Waterproof Anti-Theft GPS Tracker for Motorcycle with ACC Inform Function Description: *Unique mini size (6.0*3.5*1.8cm), waterproof IP67 *Built-in GSM, GPS antenna, Shock sensor. *Power supply: 8V - 40V, can use for vehicle, motorcycle, E-bike, Truck etc. *Google maps GPS car tracking system*Get location in real street/address name, send "address+pas Google maps GPS car tracking system *Remote Engine-stop and Resume(for BC) *Tracking function by timing and frequency *Authorized number added and deleted function *Geo-fence *Door/ACC Alarm *Movement alert *Over speed alarm. *Power supply disconnection alarm. *Low battery alarm function *Check the vehicle status *ACC ALARM, Shock ALARM *Alarm without GSM network service *Less GPRS traffic *Automatic update positions of vehicle turns *GPS blind area alarm *Remote controller function ( for C only) *Sleep mode Optional accessories: *Alarm siren (for C only) Specifications: DIM.6.0*3.5*1.8cm& , lt; , br>Weight:50g Network:GSM/GPRS Band frequency:850/900/1800/1900Mhz GPS sensitivity:-165dBm GPS accuracy:5m Power supply:8V - 40V Back up battery: Chargeable 3.7V 180mAh

Minimum Order: 50

GPS403 This tracker is a newly product based on the GSM / GPRS network and GPS satellite positioning system, which set multiple functions of security, positioning, monitoring surveillance,emergency alarms and tracking in its entirety. Multiple Tracking Ways: *Track by SMS with latitude and longitude *Real track by SMS on PDA Cell phone with the maps link. *Web based online tracking on PC at our server. *IOS and Android APP Function Description: *Update firmware over-the-air (OTA) *Mini and waterproof design *Built-in GSM, GPS antenna, Shock sensor. *Google maps GPS car tracking system *Support fuel sensor for fuel level monitor *Get location in real street/address name, send "address+pas Google maps GPS car tracking system with remote controller GPS tracker sword to tracker. *Location Based Service. *Remote Engine-stop and Resume. *Tracking function by timing and frequency *Authorized number added and deleted function *Support hidden alarm and monitor function *Geo-fence *Door / ACC Alarm *Movement alert. *Over speed alarm. *Power supply disconnection alarm. *Low battery alarm function *Check the vehicle status *Set up DOOR ALARM, ACC ALARM, Shock ALARM *Alarm without GSM network service *Less GPRS traffic *Automatic update positions of vehicle turns *GPS blind area alarm *Configure heartbeat package interval Specifications: DIM.:83*54*26mm Weight:7 , 0g Network:GSM/GPRS/LTE Band 4G: B1/B2/B3/B4/B5/B7/B8/B12/B17/B20/B40 Band 2G: 1900/1800/900/850MHz GPS Sensitivity:-159dBm GPS Accuracy:5m Voltage of car power system: 12 V -24V Backup battery:Chargeable 3.7V 350mAh Li-ion battery Storage Temp.:-40°C to +85°C Operation Temp.:-20°C to +65°C Humidity:5%--95% non-condensing Warranty: 1. All products have been strictly Quality Checked in house before packing. 2. All products have been well packed before shipping. 3. One year warranty is provided for all models. We will bear maintenance cost during warranty.

Minimum Order: 50

GPS403 This tracker is a newly product based on the GSM / GPRS network and GPS satellite positioning system, which set multiple functions of security, positioning, monitoring surveillance,emergency alarms and tracking in its entirety. Multiple Tracking Ways: *Track by SMS with latitude and longitude *Real track by SMS on PDA Cell phone with the maps link. *Web based online tracking on PC at our server. *IOS and Android APP Function Description: *Update firmware over-the-air (OTA) *Mini and waterproof design *Built-in GSM, GPS antenna, Shock sensor. *Google maps GPS car tracking system *Support fuel sensor for fuel level monitor *Get location in real street/address name, send "address+pas Google maps GPS car tracking system with remote controller GPS tracker sword to tracker. *Location Based Service. *Remote Engine-stop and Resume. *Tracking function by timing and frequency *Authorized number added and deleted function *Support hidden alarm and monitor function *Geo-fence *Door / ACC Alarm *Movement alert. *Over speed alarm. *Power supply disconnection alarm. *Low battery alarm function *Check the vehicle status *Set up DOOR ALARM, ACC ALARM, Shock ALARM *Alarm without GSM network service *Less GPRS traffic *Automatic update positions of vehicle turns *GPS blind area alarm *Configure heartbeat package interval Specifications: DIM.:83*54*26mm Weight:7 , 0g Network:GSM/GPRS/LTE Band 4G: B1/B2/B3/B4/B5/B7/B8/B12/B17/B20/B40 Band 2G: 1900/1800/900/850MHz GPS Sensitivity:-159dBm GPS Accuracy:5m Voltage of car power system: 12 V -24V Backup battery:Chargeable 3.7V 350mAh Li-ion battery Storage Temp.:-40°C to +85°C Operation Temp.:-20°C to +65°C Humidity:5%--95% non-condensing Warranty: 1. All products have been strictly Quality Checked in house before packing. 2. All products have been well packed before shipping. 3. One year warranty is provided for all models. We will bear maintenance cost during warranty.

Minimum Order: 50

cheap vehicle Car GPS Tracker Device with Engine Cut This tracker is based on the GSM / GPRS network and GPS satellite positioning system, which set multiple functions of security, positioning, monitoring surveillance, emergency alarms and tracking in its entirety. Multiple Tracking Ways: *Track by SMS with latitude and longitude *Real track by SMS on PDA Cell phone with the maps link. *Web based online tracking on PC at our server www.gpstrackerxy.com. Function Description for coban tk103: *google maps gps car tracking system with remote controller gps tracker *Support fuel sensor for fuel level monitor *Get location in real street/address name, send "address+pas google maps gps car tracking system with remote controller gps tracker sword to tracker. *Location Based Service. *Remote Engine-stop and Resume. *Tracking function by timing and frequency *Authorized number added and deleted function *Support hidden alarm and monitor function *Geo-fence *Door / ACC Alarm *Movement alert. *Over speed alarm. *Power supply disconnection alarm. *Low batttery alarm function *Check the vehicle status *Set up DOOR ALARM, ACC ALARM, SENSOR ALARM by remote control *Alarm without GSM network service *Less GPRS traffic *Automatic update positions of vehicle turns *GPS blind area alarm New Functions: 1. ACC working inform when track with unlimited times upon time interval 2. Decide how many times of alarm message 3. Calibration of fuel sensor 4. Built in Acceleration Sensor Alarm Optional function: *external shock Sensor *Siren *SD card *Optional 24V relay for 24V vehicle *USB cable to send commands on PC Applying directions: Vehicle fleet/logistics/Vehicle rental specifications DIM.:83*54*26m , m Weight:120g Network: GSM/GPRS Band: 850/900/1800/1900Mhz GPS Sensitivity: -159dBm GPS Accuracy:5m Voltage of car power system:12 V -24V Backup battery: Chargeable changeable 3.7V 350mAh Li-ion battery Storage Temp.:-40°C to +85°C Operation Temp.:-20°C to +65°C Humidity:5%--95% non-condensing

Minimum Order: 50

GPS403 This tracker is a newly product based on the GSM / GPRS network and GPS satellite positioning system, which set multiple functions of security, positioning, monitoring surveillance,emergency alarms and tracking in its entirety. Multiple Tracking Ways: *Track by SMS with latitude and longitude *Real track by SMS on PDA Cell phone with the maps link. *Web based online tracking on PC at our server. *IOS and Android APP Function Description: *Update firmware over-the-air (OTA) *Mini and waterproof design *Built-in GSM, GPS antenna, Shock sensor. *Google maps GPS car tracking system *Support fuel sensor for fuel level monitor *Get location in real street/address name, send "address+pas Google maps GPS car tracking system with remote controller GPS tracker sword to tracker. *Location Based Service. *Remote Engine-stop and Resume. *Tracking function by timing and frequency *Authorized number added and deleted function *Support hidden alarm and monitor function *Geo-fence *Door / ACC Alarm *Movement alert. *Over speed alarm. *Power supply disconnection alarm. *Low battery alarm function *Check the vehicle status *Set up DOOR ALARM, ACC ALARM, Shock ALARM *Alarm without GSM network service *Less GPRS traffic *Automatic update positions of vehicle turns *GPS blind area alarm *Configure heartbeat package interval Specifications: DIM.:83*54*26mm Weight:7 , 0g Network:GSM/GPRS/LTE Band 4G: B1/B2/B3/B4/B5/B7/B8/B12/B17/B20/B40 Band 2G: 1900/1800/900/850MHz GPS Sensitivity:-159dBm GPS Accuracy:5m Voltage of car power system: 12 V -24V Backup battery:Chargeable 3.7V 350mAh Li-ion battery Storage Temp.:-40°C to +85°C Operation Temp.:-20°C to +65°C Humidity:5%--95% non-condensing Warranty: 1. All products have been strictly Quality Checked in house before packing. 2. All products have been well packed before shipping. 3. One year warranty is provided for all models. We will bear maintenance cost during warranty.

Minimum Order: 50

This tracker is a newly product based on the GSM / GPRS network and GPS satellite positioning system, which set multiple functions of security, positioning, monitoring surveillance, emergency alarms and tracking in its entirety. Multiple Tracking Ways: *Track by SMS with latitude and longitude *Real track by SMS on PDA Cell phone with the maps link. *Web based online tracking on PC at our server www.gpstrackerxy.com. *IOS and Android APP Function Description: *Unique mini size (6.0*3.5*1.8cm), waterproof IP67 *Built-in GSM, GPS antenna, Shock sensor. *Power supply: 8V - 40V, can use for vehicle, motorcycle, E-bike, Truck etc. *Google maps GPS car tracking system*Get location in real street/address name, send "address+pas Google maps GPS car tracking system *Remote Engine-stop and Resume(for BC) *Tracking function by timing and frequency *Authorized number added and deleted function *Geo-fence *Door/ACC Alarm *Movement alert *Over speed alarm. *Power supply disconnection alarm. *Low battery alarm function *Check the vehicle status *ACC ALARM, Shock ALARM *Alarm without GSM network service *Less GPRS traffic *Automatic update positions of vehicle turns *GPS blind area alarm *Remote controller function ( for C only) *Sleep mode Optional accessories: *Alarm siren (for C only) Specifications: DIM.6.0*3.5*1.8cm& , lt; , br>Weight:50g Network:GSM/GPRS Band frequency:850/900/1800/1900Mhz GPS sensitivity:-165dBm GPS accuracy:5m Power supply:8V - 40V Back up battery: Chargeable 3.7V 180mAh

Minimum Order: 50