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<title><![CDATA[EC21 Product Catalogs - Optical flat]]></title>
<link><![CDATA[https://www.ec21.com/ec-market/Optical flat.html]]></link><item>
<title><![CDATA[Optical Drop Cable(F-8 Round/Flat Type)]]></title><link><![CDATA[https://escable.en.ec21.com/Optical_Drop_Cable_F_8--12061712_12061935.html]]></link><description><![CDATA[Optical Drop Cable(F-8 Round/Flat type)
Application
- Fiber to the home(FTTH)
- Cyber APT
- Office Building
- PC room
- CATV
Features and Benefits
- Standard fiber count: 2~4 core
- Economical constr]]></description><pubDate><![CDATA[20251029]]></pubDate></item>
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<title><![CDATA[Optical Flats]]></title><link><![CDATA[https://bill2021.en.ec21.com/Optical_Flats--11096792_11097976.html]]></link><description><![CDATA[All kinds of bespoke optical flats:
Our products mainly consist of optical lenses, prisms, optical windows, precision flats, waveplate, optical filters, customized components, special components, len]]></description><pubDate><![CDATA[20200408]]></pubDate></item>
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<title><![CDATA[PCB Circuit Board Microcrystalline Dot Protective Film]]></title><link><![CDATA[https://b76226024.en.ec21.com/PCB_Circuit_Board_Microcrystalline_Dot--12065038_12070202.html]]></link><description><![CDATA[optical properties during exposure. The 
initial adhesion after application can be fine-tuned to suit customer 
needs, facilitating rework. Furthermore, the film&apos;s surface features a 
solvent-resista]]></description><pubDate><![CDATA[20260610]]></pubDate></item>
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<title><![CDATA[METICULAB Ruby Escapement Jewels  Entrance, Exit Pallet (JW/CW), Roller Jewel (YD)]]></title><link><![CDATA[https://meticulab.en.ec21.com/METICULAB_Ruby_Escapement_Jewels_Entrance--12070432_12071712.html]]></link><description><![CDATA[(40× – 100×)
Random dimensional check with optical comparator
ISO 9001:2015 certified manufacturing
8. Brand 
Brand: METICULAB
For technical drawings or a quotation, please contact us directly.
]]></description><pubDate><![CDATA[20260509]]></pubDate></item>
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<title><![CDATA[PCB Circuit Board Microcrystalline Dot Protective Film]]></title><link><![CDATA[https://yingfaoffice.en.ec21.com/PCB_Circuit_Board_Microcrystalline_Dot--12059413_12059576.html]]></link><description><![CDATA[optical properties during exposure. The initial adhesion after application can be fine-tuned to suit customer needs, facilitating rework. Furthermore, the film&apos;s surface features a solvent-resistant ]]></description><pubDate><![CDATA[20260330]]></pubDate></item>
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<title><![CDATA[Clear TPU Protective Film for Mobile Device]]></title><link><![CDATA[https://landhighco.en.ec21.com/Clear_TPU_Protective_Film_for--11947234_11947235.html]]></link><description><![CDATA[optical clarity, and scratch resistance in a single, ultra-thin layer — making it ideal for modern smartphones, tablets etc.
Why Choose Our TPU Protective Film? 
Landhigh’s TPU (Thermoplastic Pol]]></description><pubDate><![CDATA[20250722]]></pubDate></item>
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<title><![CDATA[Good FTTH Drop Cables Flat Self-supporting 1C 2C 4C 12C 24C  SM G657A1 G657A2 G657B3 LSZH GoodFtth]]></title><link><![CDATA[https://goodftth2023.en.ec21.com/Good_FTTH_Drop_Cables_Flat--11772481_11781455.html]]></link><description><![CDATA[Optical
Characteristics:
G652D
G657A1
G657A2
G.655
62.5/125
50/125
Attenuation
(+20℃)
@850nm
≤3.0dB/km
@1300nm
≤1.0dB/km
@1310nm
≤0.36dB/km
@1550nm
≤0.22dB/km
≤0.23dB/km
Bandwidth 
（Cla]]></description><pubDate><![CDATA[20250328]]></pubDate></item>
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<title><![CDATA[High Sharpness Synthetic Diamond Grit RVD Green Diamond for Grinding Wheel Making]]></title><link><![CDATA[https://ivy125banner.en.ec21.com/High_Sharpness_Synthetic_Diamond_Grit--10847901_10848920.html]]></link><description><![CDATA[optical glass and semiconductor silicon wafer.
3. Application in ceramic bond abrasive tools: it can meet the demand of high precision grinding and high efficient grinding for difficult-to-cut materi]]></description><pubDate><![CDATA[20250327]]></pubDate></item>
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<title><![CDATA[High Temperature Resistant Three-in-One Release Film]]></title><link><![CDATA[https://pipiluluha.en.ec21.com/High_Temperature_Resistant_Three_in--12047105_12047245.html]]></link><description><![CDATA[optics, and packaging industry. In the lamination process of circuit boards, the three-in-one release film can prevent the semi-cured sheet from adhering to the steel plate, while buffering the press]]></description><pubDate><![CDATA[20250306]]></pubDate></item>
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<title><![CDATA[1500W 2000W 3000W Single Table Metal Fiber Precision Laser Cutting Machine]]></title><link><![CDATA[https://laser2025.en.ec21.com/1500W_2000W_3000W_Single_Table--12033489_12034407.html]]></link><description><![CDATA[1. Novel Design: Open gantry structure ensures a clear and stable cutting process.2. High-precision cutting: Equipped with an advanced optical system and precision mechanical transmission device, the]]></description><pubDate><![CDATA[20250214]]></pubDate></item>
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<title><![CDATA[Automatic Video Measuring Machine VMM Vision Image Instant Measuring System]]></title><link><![CDATA[https://chotest0613.en.ec21.com/Automatic_Video_Measuring_Machine_VMM--11966346_12035087.html]]></link><description><![CDATA[optical probe to measure height and flatness and realize 2.5D space measurement;Supports external input from digital calipers and height gauges; Supports label printers.
Height measurement
Flatness m]]></description><pubDate><![CDATA[20250107]]></pubDate></item>
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<title><![CDATA[Quartz Capillary Tubes with One End Sealed]]></title><link><![CDATA[https://qimglass.en.ec21.com/Quartz_Capillary_Tubes_with_One--12030677_12031631.html]]></link><description><![CDATA[Optical Properties
An important difference between silica glass and ordinary glass is its good transmittance throughout the entire spectrum, especially in the ultraviolet and deep ultraviolet spectra]]></description><pubDate><![CDATA[20241217]]></pubDate></item>
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<title><![CDATA[Factory Price Optical Table with Air Spring Vibration Isolator for Optical Equipment Automatic Level]]></title><link><![CDATA[https://optical99.en.ec21.com/Factory_Price_Optical_Table_with--12026711_12028038.html]]></link><description><![CDATA[Optical TopsConstruction: Honeycomb core sandwiched structureCore: Plated steel honeycombTop Skin: 5mm thickness ferromagnetic stainless steel plate, brush finishedSide Walls: carbon steel plate with]]></description><pubDate><![CDATA[20241127]]></pubDate></item>
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<title><![CDATA[Optical Spherical Concave Reflective Mirror]]></title><link><![CDATA[https://ruiqioptics.en.ec21.com/Optical_Spherical_Concave_Reflective_Mirror--11974301_12019800.html]]></link><description><![CDATA[Optical mirror is an optical element which has reflective function. Accordingly shape, it can divide into three parts, that is flat mirror, spherical mirror, aspheric mirror. Accordingly, degree of r]]></description><pubDate><![CDATA[20241022]]></pubDate></item>
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<title><![CDATA[Single Spindle CNC Lathe]]></title><link><![CDATA[https://hannover2022.en.ec21.com/Single_Spindle_CNC_Lathe--11700238_11700324.html]]></link><description><![CDATA[optical fiber laser cutting machine and CNC five axis bending machine are used to produce sheet metal for the flat car, which makes the machine tool look novel, simple and elegant, and the work is fi]]></description><pubDate><![CDATA[20241021]]></pubDate></item>
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<title><![CDATA[2-wireconventional Photoelectric Smoke Detector Sensor Alarm]]></title><link><![CDATA[https://hsfire.en.ec21.com/2_wireconventional_Photoelectric_Smoke_Detector--10595077_8815156.html]]></link><description><![CDATA[Skype firealarm87 /wechat 15220176087
Conventional Smoke Detector, Operates by Advanced MCU Expert Algorithm Software.
The detectors are photo-electronic detector uses a state of-the-art optical sens]]></description><pubDate><![CDATA[20240923]]></pubDate></item>
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<title><![CDATA[Plano Concave Lens]]></title><link><![CDATA[https://hsgdoptic.en.ec21.com/Plano_Concave_Lens--12004331_12004335.html]]></link><description><![CDATA[https://www.hsgd-optics.com/optical-spherical-lens/plano-concave-lens.html
Plano Concave Lens
A plano-concave lens
is an optical lens with one concave and one flat surface. It has a negative focal le]]></description><pubDate><![CDATA[20240913]]></pubDate></item>
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<title><![CDATA[Self Leveling Precision Vibration Isolation Optical Table Nonmagnetic Optical Platform PT02]]></title><link><![CDATA[https://pdvrebecca.en.ec21.com/Self_Leveling_Precision_Vibration_Isolation--12000008_12001034.html]]></link><description><![CDATA[optical vibration isolation platform, the outer frame is made of medium carbon steel plate with strong rigidity, small deformation and good welding performance.
■ The vibration isolation layer uses]]></description><pubDate><![CDATA[20240909]]></pubDate></item>
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<title><![CDATA[Concentrated Photovoltaic (CPV) Solar Modules MS-CPV360W]]></title><link><![CDATA[https://macsunsolar06.en.ec21.com/Concentrated_Photovoltaic_CPV_Solar_Modules--11990997_11991176.html]]></link><description><![CDATA[optical lens and multilevel concentrator parts which avoids chromatic aberration
Reliable &amp; Robust Design:1, Proven materials, partially tempered front glass and a sturdy anodized frame allowed mo]]></description><pubDate><![CDATA[20240824]]></pubDate></item>
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<title><![CDATA[TiOx NbOx Cr2O3 Al2O3 YSZ Y2O3/YOF/YF3/YAG for Plasma Spray Coating]]></title><link><![CDATA[https://crownre2008.en.ec21.com/TiOx_NbOx_Cr2O3_Al2O3_YSZ--11957443_11985958.html]]></link><description><![CDATA[optical communication parts, special structural parts, dental materials and fuel cells, automotive oxygen sensors and other fields.YSZ, or yttria-stabilized zirconia, is a ceramic material that has b]]></description><pubDate><![CDATA[20240815]]></pubDate></item>
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<title><![CDATA[Top-Bend Flexible LED Wall Washer Light White Color DC24V 24Watts]]></title><link><![CDATA[https://archled.en.ec21.com/Top_Bend_Flexible_LED_Wall--11951933_11982255.html]]></link><description><![CDATA[optical lens including: 20°, 30°,40°,45°,60° and asymmetric 20*40°;
- Wash 3-4 meters high wall;
- Can be cuttable and re-connected by smart accessories;
- High efficay up to 110LM/W for white;]]></description><pubDate><![CDATA[20240808]]></pubDate></item>
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<title><![CDATA[POLYESTER FILM ( PET FILM)]]></title><link><![CDATA[https://sdicom.en.ec21.com/POLYESTER_FILM_PET_FILM--10_3252261.html]]></link><description><![CDATA[Optical Density / (min.) / : 2.0 
WVTR /g/m2/24 hr (max.) /ASTM E-96 / : 4 
O2TR / cc/m2/24 hr (max.) /ASTM D-1434 / : 39 
Corona Treatment /Dyne/cm (min.)/ ASTM D-2578 / : 50 
----------------------]]></description><pubDate><![CDATA[20240805]]></pubDate></item>
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<title><![CDATA[OEM Sapphire Glass Window Infrared Substrate Ar Coating]]></title><link><![CDATA[https://xinxingliangoptics12.en.ec21.com/OEM_Sapphire_Glass_Window_Infrared--11974281_11974291.html]]></link><description><![CDATA[window, shape as round, square, rectangular, customer shape, make hole is also available.
Substrate Material:optical glass,quartz,pyrex,sapphire,znse,caf2,ge,si,corning 7980
Diameters Available:1mm t]]></description><pubDate><![CDATA[20240724]]></pubDate></item>
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<title><![CDATA[Honeycomb Paper Cardboard Carton Box No-Die CNC Cutting Machine &amp; Drawing Machine]]></title><link><![CDATA[https://himcnc.en.ec21.com/Honeycomb_Paper_Cardboard_Carton_Box--11945602_11968886.html]]></link><description><![CDATA[Optical Tracking Cutting Machine EVA Foam Cutting Machine
Corrugated Packaging Boxes Custom Cutting Machine Flatbed Cutter Machine
Corrugated Paper Board Cutting Machine Box Making Machine
Corrugated]]></description><pubDate><![CDATA[20240715]]></pubDate></item>
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<title><![CDATA[MPO MT Connector Polishing Film]]></title><link><![CDATA[https://lappingfilmfactory.en.ec21.com/MPO_MT_Connector_Polishing_Film--11966805_11966808.html]]></link><description><![CDATA[optical fiber connectors.Lapping film is micron graded diamond or aluminum oxide or silicon carbide particles resin bonded to a uniform 3-mil polyester film backing which offers excellent flatness...]]></description><pubDate><![CDATA[20240711]]></pubDate></item>
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<title><![CDATA[Plano-Concave Lens]]></title><link><![CDATA[https://opticreate.en.ec21.com/Plano_Concave_Lens--11182309_11210014.html]]></link><description><![CDATA[Optical Lenses with negative focal lengths. Opticreate PCV Lenses 
should be oriented with the plano, or flat, surface towards the desired focal plane. Plano-Concave Lenses
are ideal for beam expansi]]></description><pubDate><![CDATA[20240710]]></pubDate></item>
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<title><![CDATA[Mechanic MIC2 MIC3 7X-50X Trinocular Stereo Soldering Microscope]]></title><link><![CDATA[https://phonefix11.en.ec21.com/Mechanic_MIC2_MIC3_7X_50X--11948200_11965498.html]]></link><description><![CDATA[optical properties and stability, with the CTV 0.45X adapter, the imaging effect is significantly improved, this adapter delivers sharper, more detailed images than regular CTV interfaces.
6. Mic 3 t]]></description><pubDate><![CDATA[20240709]]></pubDate></item>
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<title><![CDATA[Monocrystalline Silicon Wafer]]></title><link><![CDATA[https://czboyan.en.ec21.com/Monocrystalline_Silicon_Wafer--11964559_11964560.html]]></link><description><![CDATA[optical properties.
The diameter of Monocrystalline Silicon Wafers is an essential parameter that determines the size of the semiconductor devices that can be fabricated on them. These wafers are ava]]></description><pubDate><![CDATA[20240707]]></pubDate></item>
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<title><![CDATA[Special Laser Cutting Machine for Pipe]]></title><link><![CDATA[https://25ddsa.en.ec21.com/Special_Laser_Cutting_Machine_for--11930539_11956415.html]]></link><description><![CDATA[optical conversion efficiency, etc. It can be used for cutting, welding, and drilling of metal materials such as stainless steel, carbon steel, aluminum, and copper, and is used in sheet metal cuttin]]></description><pubDate><![CDATA[20240628]]></pubDate></item>
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<title><![CDATA[LLunaInk Pro Laser Tattoo Removal Machine]]></title><link><![CDATA[https://weesa123456.en.ec21.com/LLunaInk_Pro_Laser_Tattoo_Removal--11957714_11958066.html]]></link><description><![CDATA[optic Q switching technology Optical articulated light guide arm has output efficiency greater than 90%, versus 70-80% efficiency of other brands.Flat Top Beam Output - Highly uniform and stable ligh]]></description><pubDate><![CDATA[20240627]]></pubDate></item>
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<title><![CDATA[Optical Glass Mirrors]]></title><link><![CDATA[https://syccooptics.en.ec21.com/Optical_Glass_Mirrors--11952878_11952887.html]]></link><description><![CDATA[Optical Glass Mirror is an object with a surface that has high reflection. It is smooth enough to form an image. The most familiar type of mirror is the plane mirror, which has a flat surface. Curved]]></description><pubDate><![CDATA[20240617]]></pubDate></item>
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<title><![CDATA[Beam Displacer]]></title><link><![CDATA[https://shelly0119.en.ec21.com/Beam_Displacer--11439118_11937928.html]]></link><description><![CDATA[Optics
design wavelength range can be 350-4000nm
•YVO4, a-BBO, calcite crystal upon design,
•the two out put light is to parallel light , The polarization orientation of the two light is 90deg,
]]></description><pubDate><![CDATA[20240516]]></pubDate></item>
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<title><![CDATA[Niobium Sputtering Target]]></title><link><![CDATA[https://cstitanium1.en.ec21.com/Niobium_Sputtering_Target--11858526_11931203.html]]></link><description><![CDATA[flat panel display industry, optical coating industry, tools and decorative coating industry.
Another product you may be interested in: molybdenum sputtering target
.
Niobium Sputtering Target Alloy ]]></description><pubDate><![CDATA[20240430]]></pubDate></item>
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<title><![CDATA[CNC Part]]></title><link><![CDATA[https://mim284043.en.ec21.com/CNC_Part--11913844_11927543.html]]></link><description><![CDATA[Optical Comparator, Caliper Vernier,CMM
Depth Caliper Vernier, Universal Protractor, Clock GaugeGerenal Tolerance:(+/-mm)CNC Machining: 0.005
Core moving: 0.005
Turning: 0.005
Grinding(Flatness/in2):]]></description><pubDate><![CDATA[20240421]]></pubDate></item>
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<title><![CDATA[Quadrant Photodiode (QPD) TO-CAN]]></title><link><![CDATA[https://wooriro.en.ec21.com/Quadrant_Photodiode_QPD_TO_CAN--11769380_11769863.html]]></link><description><![CDATA[Flat Window
Application
Laser Seeker
Position Sensing
Laser Spot Tracking
Laser Range Finder
Free Space Optical Communication
Missile Guidance
Beam Alignment
Optical Tweezers
Auto Tracking System
]]></description><pubDate><![CDATA[20240331]]></pubDate></item>
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<title><![CDATA[Hivetecks _ Aluminum Honeycomb Panel]]></title><link><![CDATA[https://hongseong.en.ec21.com/Hivetecks_Aluminum_Honeycomb_Panel--9119678_941017.html]]></link><description><![CDATA[optically flat and under the consistent quality control. This system help to the site designer, elector and contractors.
Highly Reliable Adhesive, HIVETECKS&amp;reg; 
The most important factor when produ]]></description><pubDate><![CDATA[20140812]]></pubDate></item>
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<title><![CDATA[Aerial Fiber Optic Cable]]></title><link><![CDATA[https://unitekfiber.en.ec21.com/Aerial_Fiber_Optic_Cable--11000150_11000168.html]]></link><description><![CDATA[optic cable is mainly used for secondary trunk lines and below. It is typically installed in flat terrain or low-fluctuation areas.
The method of erecting overhead cables is easy to accomplish. It is]]></description><pubDate><![CDATA[20190823]]></pubDate></item>
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<title><![CDATA[Fiber Laser Welding Machine Auto Wires Feeder 1000w 1500W 2000W Raycus JPT IPG Fiber Laser Welding]]></title><link><![CDATA[https://shirleyleapek.en.ec21.com/Fiber_Laser_Welding_Machine_Auto--11540996_11540997.html]]></link><description><![CDATA[flat and beautiful.
​5.No consumables, small size, flexible processing, low operating and maintenance costs.
​6.The laser is transmitted through fiber optics and can be used in conjunction with a]]></description><pubDate><![CDATA[20220309]]></pubDate></item>
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<title><![CDATA[PET Film]]></title><link><![CDATA[https://choichl.en.ec21.com/PET_Film--2021718_2548989.html]]></link><description><![CDATA[Optically brilliant, clear appearance 
- Unequaled mechanical strength and toughness 
- Excellent dielectric properties 
- Good flatness and coefficient of friction (COF) 
- Tear-resistant and punctu]]></description><pubDate><![CDATA[20071229]]></pubDate></item>
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<title><![CDATA[Microscope of Digital Camera]]></title><link><![CDATA[https://yelisha.en.ec21.com/Microscope_of_Digital_Camera--2472169_2472170.html]]></link><description><![CDATA[optical system of fully coated, based on MTF (modulation Transfer Function) analysis, for improved image flatness and contrast. The images are brighter and distinct even at the periphery of the field]]></description><pubDate><![CDATA[20080721]]></pubDate></item>
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<title><![CDATA[Mouse IC Paw3805ek-CJV2 and Lens Blue LED Track On Glass Mouse Sensor]]></title><link><![CDATA[https://lulu1224.en.ec21.com/Mouse_IC_Paw3805ek_CJV2_and--11178566_11179343.html]]></link><description><![CDATA[optical sensor which isoptimized for blue LED based wireless mouse application.It has high accuracy navigation ability that enablesnavigation virtually on any flat surface, including thetransparent g]]></description><pubDate><![CDATA[20240312]]></pubDate></item>
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<title><![CDATA[Slides and Cover Glass]]></title><link><![CDATA[https://mlabware.en.ec21.com/Slides_and_Cover_Glass--2901668_2901680.html]]></link><description><![CDATA[flat and optically clear.
2. We have 3 types of edges to match the various usage:
a. Cut (unground) edges
b. Smooth and ground edges with 90 degree shapes.
c. Smooth and ground edges with 90 degree s]]></description><pubDate><![CDATA[20080707]]></pubDate></item>
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<title><![CDATA[PET Film]]></title><link><![CDATA[https://stevenzhang801220.en.ec21.com/PET_Film--3037282_5357657.html]]></link><description><![CDATA[Optically brilliant, clear appearance
2: Unequaled mechanical strength and toughness
3: Excellent dielectric properties
4: Good flatness and coefficient of friction
5: Tear-resistant and puncture-res]]></description><pubDate><![CDATA[20180705]]></pubDate></item>
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<title><![CDATA[Water Soluble Interlining(Japanese Market)]]></title><link><![CDATA[https://yiyiinterlining.en.ec21.com/Water_Soluble_Interlining_Japanese_Market--3400953_3400984.html]]></link><description><![CDATA[optical white, dull white, off white, black, grey(charcoal)
8.handfeel available: soft, extra soft, medium, medium hard, hard
9.fusing conditions:
A. Flat bed pressing
temperature:165&amp;plusmn;5oC
pres]]></description><pubDate><![CDATA[20090818]]></pubDate></item>
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<title><![CDATA[Magnesium Tooling Plate AZ31B-H24 Hot Rolled Magnesium Alloy Plate Sheet Billet Rod Tube Wire]]></title><link><![CDATA[https://zhanglanglin.en.ec21.com/Magnesium_Tooling_Plate_AZ31B_H24--3592711_3592712.html]]></link><description><![CDATA[flat surface or high dimensional stability benefit from the use of magnesium tooling plate. Typical uses included jigs, fixtures, optical benches, vibration test equipment and inspection gauges. Magn]]></description><pubDate><![CDATA[20230614]]></pubDate></item>
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<title><![CDATA[Solder Pallet Materials]]></title><link><![CDATA[https://dwcmcoltd.en.ec21.com/Solder_Pallet_Materials--3950532_3950533.html]]></link><description><![CDATA[Optical
Color
Black
Black
Grey
Density(g/cm 3 )
1.87
1.87
1.87
Flexural Strength(MPa)-perpendicular 3 point support(23&amp;deg;C)
360
360
360
Flexural Strength(MPa)-perpendicular 3 point support(150&amp;deg;]]></description><pubDate><![CDATA[20120409]]></pubDate></item>
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<title><![CDATA[12 Well Cell Culture Plate]]></title><link><![CDATA[https://conrem.en.ec21.com/12_Well_Cell_Culture_Plate--11737608_11783619.html]]></link><description><![CDATA[optical clarity for easy observation of cell status.Low profile and low-evaporation lid design assures uniform growth.Individual alphanumerical codes for well identification, flat bottoms.
Product Pa]]></description><pubDate><![CDATA[20230506]]></pubDate></item>
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<title><![CDATA[7 in 1 Facial Machine Hydra Facial+Micro Dermabrasion+Skin Analyzer]]></title><link><![CDATA[https://vickyxiezhongshang.en.ec21.com/7_in_1_Facial_Machine--3977461_11887261.html]]></link><description><![CDATA[optical intelligent skin analyzer system:
It adopts hemispherical panoramic advanced design and is ergonomic. 24-megapixel macro camera, one shot can be completed in 8-12 seconds, 3-spectrum (epiderm]]></description><pubDate><![CDATA[20240112]]></pubDate></item>
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<title><![CDATA[Best Price High Quality Double Glazed Tempered Glass Window Manufacturer]]></title><link><![CDATA[https://gebaohua.en.ec21.com/Best_Price_High_Quality_Double--4122386_11580148.html]]></link><description><![CDATA[Optical Properties The visible light transmittance of insulated glass systems is normally in the range of 70-80% and the visible light reflectance is in the range of 10-48%;2. Thermal Properties The ]]></description><pubDate><![CDATA[20220602]]></pubDate></item>
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<title><![CDATA[2023 Free Sample/Inquiry for Drawings Biconcave Lens High Precision Optical Components]]></title><link><![CDATA[https://oplens68.en.ec21.com/2023_Free_Sample_Inquiry_for--11609135_11609150.html]]></link><description><![CDATA[Optical Glass
Surface Flatness
&lt; λ/5 @ 633nm
Scratch/Dig
&lt; 40/20 (both sides)
Eccentricity
≤ 1arcmin
Focal Length Tolerance
&lt; ± 1%
Diameter Tolerance
&lt; + 0.00/ - 0.02mm
Thickness Tolerance
&lt; ± 0]]></description><pubDate><![CDATA[20230809]]></pubDate></item>

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