Abrasive screen —C200#

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Product Description:

Abrasive sanding mesh screen is made of nylon fabric, coated with

abrasive materials; there are three kinds of shape: Sheets, Discs and

Rolls.

It is not only suitable for sanding plaster and wall surface, but also for

sanding rusty spots of metal materials and making grinding and

polishing  treatment.  It  has  good

properties of grinding, cutting and filings

removing. And it is the most ideal

abrasive tool for interior decoration.



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Q:Does anyone know the mechanism of ion exchange membrane
Ion exchange resins are high molecular material with an ion exchange function. in the solution, the ion of itself will have an exchange with the ion which has the same symbol in the solution. According to the nature of different exchange groups, the ion exchange resins can be classified into two categories cation exchange resin and anion exchange resin, most of the cation exchange resin have a sulfonic acid group (-SO3H), carboxyl (-COOH) or phenol (-C6H4OH), etc. and other acidic group, wherein the hydrogen ions can have a exchange with a metal ion in solution or other cation ion, anion exchange resin containing quaternary amine [-N (CH3) 3OH], amino (-NH2 ) or imino (-NH2 ) and other alkali basic group. They can generate OH- ions in water, which can have the exchange interaction with various anions, and the ion exchange resin is in very widely use, it is mainly used for the isolation and purification.
Q:Is it necessary to stick film for ipad?
No, it is not necessary. You had better to stick film so that your ipad will be not easily scratched. The film basically has three kinds: 1. The HD and transparent film looks like no film. When you are calling, your phone will close to your face and you will feel a bit greasy. 2. The frosted film looks like a bit fuzzy, but does not affect the use. At the first, you may be not accustomed, but after a long time, you will be accustomed. The biggest difference between this film and high-definition film is that it is dry, and you won't feel greasy when you touch it. 3. Diamond film There is some so-called sparkled diamond fragments in it. But whether there is diamond fragment, has not been studied. It is the same as high-definition film, feeling a bit greasy.
Q:Landfill geomembrane safety rules.
Q:What is electrothermal transparent film?
Electrothermal film heating system is different from dot mode heating system such as radiator, air-conditioning and heating radiator, from the streamlined heating system such as heating cable and from the face heating system such as LC supply heating high-tech products made by aerospace flight technology. It takes electrothermal film as heating element to transfer heat into the air by radiation. Human body and objects can be warmed first. It is better in resultant effect compared with traditional convection heating method. Low temperature radiation electrothermal film heating system is composed of power supply, temperature controller, adapting piece, insulating layer, electrothermal film and finish coat. Electric energy can be converted to heat energy by electrothermal film.
Q:Glass wool 159 * 70 What does it mean
70 km diameter 159mm.
Q:which is good for the eyes, Matte stick membrane or high permeability stick membrane
High permeable membrane,compared with the dull polished membrane, is good for the eyes, but it usually also need to pay attention to the eye when using the cell phone, the eyes can not say taht it won't be hurt with no film or paste other kinds of film~
Q:How to use geomembrane to plant lotus root?
When planting the lotus root, both geomembrane and composite geomembrane can be used to prevent seepage and resist root. The site on which the geomembrane or composite geo-membrane is laid should be properly treated. Before laying those materials, the site should be levelled and pressed firmly without sharp stones and branches on it. For example, if mountainous ground is uneven, loess should be laid to level it. When the geomembrane is laid, it is strictly prohibited to move machinery on it. Workers that lay the geomembrane should wear flat shoes to walk on it. After the geomembrane is laid, soil of certain thickness needs to be backfilled on the geomembrane to protect it.especially in the area above the water around the lotus pool to prevent the sun exposure and the aging of geomembrane.
Q:The differences between rock wool board and glass wool board
has good sound absorption properties, whose chemical composition belong to glass, has a large number of tiny pores, oil, good acoustic performance, boiler, make man-made inorganic fiber with high-speed centrifugation equipment, national defense. rock wool board has a high temperature endurance of 650 degrees, transportation and other industries, fan. Fibers inside the centrifugal glass wool are fluffy and staggered into cotton-like material, which is the ideal thermal insulation and sound insulation material with stable chemical properties. Glass wool is made by fibrillating the melten glass and then heating and curing into a variety of specifications, metallurgy, flue, textiles, automotives and boats and other industrial equipment, with features of insulation resistance and corrosion resistance, which is an inorganic fiber, with good shape and low thermal conductivity. Glass wool is one of the glass fiber categories with small bulk density, rock wool insulation products and heat exchangers of different requirements, is a kind of man-made inorganic fiber, is pipeline basin. Rockwool products are widely used, while adding special binder and dust laying oil, electricity, suitable for construction. glass wool has a high temperature endurance of 450 degrees, the main raw material of rock wool is natural basalt, which is typical porous sound-absorbing material after being melted in high temperature.
Q:What is the difference among rock wool board, rock wool and glass wool?
Rock wool is a kind of mineral wool. It takes natural rocks and minerals and other mateirals as raw materials, and formulates fluffy short fiber. Glass wool belongs to a category of glass fiber, and is a kind of man-made inorganic fiber. Glass wool is a kind of spongiform material shaped by making melten glass fibering, it's chemical content belongs to glass and is a kind of inorganic fiber. It has good molding, small bulk density, low thermal conductivity, good thermal insulation and heat insulation, good sound absorption, corrosion resistance and stable chemical performance.
Q:What are the requirements of geomembrane waterproofing construction for the base?
Level compaction, sharp object namely

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