Six Major Textile Raw Materials - 0 views
In synthetic fibers, polyester, nylon, acrylic, polypropylene, vinylon and polyvinyl chloride are called "six major fibers". Synthetic fibers are monomers made from petroleum, natural gas, coal an...
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Evolutionary History of Socks for 3000 Years - 1 views
Speaking of socks, everyone is familiar with them. "Shuowen" said: "Pan [interpretation of the same as"socks", w_], footwear is also." The earliest socks, mainly play the role of foot protectio...
What are pressure socks? Can you slim your legs? - 0 views
What are pressure socks? What kind of tight stockings are they? No, so-called pressure socks are socks that can be used to treat varicose veins of lower extremities and other diseases with the func...
What is the point that a baby needs to pay attention to when wearing socks? - 0 views
How do babies wear socks at home is a question for many new mothers. What kind of socks should they choose and when should they wear socks for babies? Generally, the most common thing for babies t...
What are the characteristics of different frame materials? - 0 views
At present, glasses on the market are mainly divided into three categories: metal, non-metal and natural materials. Today we are going to talk about metal materials.~ Metal glasses are also divide...
All-round understanding of titanium frame with glasses - 0 views
Titanium has a low density of 4.51g/cubic centimeter, higher than aluminium and lower than steel, copper and nickel. Titanium has high strength, low density, high hardness, high melting point and s...
What's the difference between spherical and aspherical lenses? - 0 views
What is a spherical lens? What are aspheric lenses? What's the difference between the two? Why would you recommend aspheric lenses to me? Let's just talk about the difference between the two. What...
Specialty Material of Socks - 0 views
1. Ice wire Ice filament is also called rayon, viscose filament and viscose filament. The cellulose content of iced silk is over 99.5%. Cotton fibers and wood fibers in 95-97% ice silk fat and wax...
How to Maintain Cycling Glasses - 0 views
Cautions for the use of bike mirrors: 1. The glasses are not worn out, they are all rubbed and crushed. It's dirty to try not to wipe glasses without wiping them. If you wipe them with a lens clot...
What materials will be used in the processing of spectacle frames? - 0 views
The metal materials used for spectacle frames are copper alloy, nickel alloy and precious metal. Request certain hardness, softness, elasticity, wear resistance, corrosion resistance, light weight,...
Processing Technology of Frameless Glass Frame - 1 views
Frameless spectacle frame is what processing technology is made out, usually we see the spectacles have spectacle frames. If you're curious about this, take a look at the glasses manufacturer's int...
What are optical glasses? - 1 views
What are optical spectacles? Optical spectacles are spectacles specially designed to correct myopia, hyperopia or astigmatism in patients with refractive errors. Eliminate visual fatigue, protect a...
How are glasses manufactured ? Production process? - 1 views
As for lenses, it is not uncommon for glasses factories to trust professional assistants. Every day, what they say in their mouth and what they hold in their hands are "lenses". Speaking of lens pa...
PCI là gì? Chỉ số năng lực cạnh tranh cấp tỉnh 2021 Việt Nam - 0 views
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