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4336. 1.90 Index Glass Optical Lens 
[Sep 10, 2025]
[Sep 10, 2025] What is Lens Index? The lens index refers to the index of refraction (otherwise known as refractive index) of lens material for eyewear. It is a relative measurement number that describes how efficiently the ...
Company: Danyang Boris Optical Co., Ltd.
4337. Cr39 Flat Top Bifocal Hc 70/28mm Optical Lens [Sep 10, 2025]
[Sep 10, 2025] What is Lens Index? The lens index refers to the index of refraction (otherwise known as refractive index) of lens material for eyewear. It is a relative measurement number that describes how efficiently the material ...
Company: Danyang Boris Optical Co., Ltd.
4338. Cr39 D Top Flat Top Bifocal UC 70/28mm Optical Lens [Sep 10, 2025]
[Sep 10, 2025] What is Lens Index? The lens index refers to the index of refraction (otherwise known as refractive index) of lens material for eyewear. It is a relative measurement number that describes how efficiently the material ...
Company: Danyang Boris Optical Co., Ltd.
4339. Cr39/1.56/PC/1.60/1.67/1.74 Freeform Rx Progressive Lens [Sep 10, 2025]
[Sep 10, 2025] Lens: A piece of glass or other transparent material with one or more curved surfaces through which objects appear clear, larger, or smaller. Usually used in glasses, cameras, telescopes, etc Classification: Lenses can ...
Company: Danyang Boris Optical Co., Ltd.
4340. Cr39 1.499 D Top Flat Top Bifocal UC 70/28mm Optical Lens [Sep 10, 2025]
[Sep 10, 2025] What is Lens Index? The lens index refers to the index of refraction (otherwise known as refractive index) of lens material for eyewear. It is a relative measurement number that describes how efficiently the material ...
Company: Danyang Boris Optical Co., Ltd.
4341. Manufacturer 1.56 Progressive Multifocal Hmc Optical Lens Danyang [Sep 10, 2025]
[Sep 10, 2025] BORIS OPTICAL is one of the most Potential Finished and Semi-Finished Optical Lenses factory located in Danyang City, China. It was establish in 2012 with covering 20000 spm and 150 employees. The annual production ...
Company: Danyang Boris Optical Co., Ltd.
4342. Tetraethoxysilane-40 CAS No.11099-06-2 Used in natural stone or other building materials [Jan 24, 2024]
[Jan 24, 2024] Application Siwin-TEOS40 silane can be used alone, diluted, or used as a component of formulated products. Used in natural stone or other building materials, it can form silica sol similar to inorganic substance ...
Company: Nanjing Siwin New Material Co., Ltd.
4343. 80W CO2 Laser Marking Engraving Machine [Sep 28, 2020]
[Sep 28, 2020] CE ROHS ISO laser marking machine factory! CO2 laser marking machine for nonmetals KT-LC80,80W glass laser tube,with laptop KT-LC is a low-power CO2 Laser Marking machine that enables marking on non-metal ...
4344. 1.56 Bifocal Round Top Blue Block Photo Grey Pgx Hmc Optical Lenses 70/28mm [Sep 10, 2025]
[Sep 10, 2025] Bifocal lens can be used to correct both far and near vision, mainly for presbyopia. The general distribution of bifocal lens is: the upper part of the lens is to see the distance, the lower part of the lens is used to ...
Company: Danyang Boris Optical Co., Ltd.
4345. 1.56 Bifocal Round Top Blue Block Photochromic Grey Pgx Hmc Optical Lenses 70/28mm [Sep 10, 2025]
[Sep 10, 2025] Bifocal lens can be used to correct both far and near vision, mainly for presbyopia. The general distribution of bifocal lens is: the upper part of the lens is to see the distance, the lower part of the lens is used to ...
Company: Danyang Boris Optical Co., Ltd.
4346. 1.56 Bifocal Round Top Blue Cut Photo Grey Pgx Hmc Optical Lenses 70/28mm [Sep 10, 2025]
[Sep 10, 2025] Bifocal lens can be used to correct both far and near vision, mainly for presbyopia. The general distribution of bifocal lens is: the upper part of the lens is to see the distance, the lower part of the lens is used to ...
Company: Danyang Boris Optical Co., Ltd.
4347. Doublesides of Hard Coated Pet Film Roll [Mar 15, 2025]
[Mar 15, 2025] Product Description Product characteristics High transmittance, low Newton-ring performance Abrasion resistance, anti-blocking property Less crystal points Product applications In-molding decoration(IMD) Cover ...
4348. Wholesale Price Anti-Reflective Film Ar Coating High Performance Ar Coating Pet Film Supplier [Dec 28, 2025]
[Dec 28, 2025] Product Description Anti-reflection film is a type of optical coating that minimizes reflection when placed on surfaces of optical materials such as lenses. This anti-reflection coating often appears as a ...
4349. Thr-800at Optical Lab Equipment Eyeglass Lens High Quality Automatic Lens Groover [Oct 23, 2025]
[Oct 23, 2025] Product Description THR-800AT Factory Ophthalmic Equipment Automatic Electric Lens Groover Series Product name : Lens Groover Product code : THR-800AT Gross Weight : 3kg Packing Size: 29*25*19CM Overview ...
4350. China Hot Sale Cr39 Single Vision 1.49 Uncoated Optical Lens [Sep 10, 2025]
[Sep 10, 2025] Lens: A piece of glass or other transparent material with one or more curved surfaces through which objects appear clear, larger, or smaller. Usually used in glasses, cameras, telescopes, etc Classification: Lenses can ...
Company: Danyang Boris Optical Co., Ltd.
