Q:PCB board material how to identify

The so-called FR4 and CEM refers to the difference between the resin and the filler, regardless of the copper foil. You can look at the PCB drawings or ask the supplier on the line! CEM is a bit brittle and easy to sack

Q:Now on the market E0 grade plate how? Now on the market E0 grade plate how?

According to the European environmental standards, the wood products in accordance with the release of formaldehyde content, divided into three levels, namely E0 level (formaldehyde emission ≤ 0.5mg / L), E1 level (formaldehyde release 0.5mg / I ~ 1.5mg / L), E2 level (formaldehyde emission greater than 1.5mg / L). Only to obtain E1-certified wood products can be used for interior decoration, known as green building materials, absolutely no harm to the human body, E0-class plate is the highest environmental standards of wood-based panels, suitable for children, pregnant women and other resistance Low room decoration of the crowd. E0 grade sheet, refers to the international top environmental standards, formaldehyde emission ≤ 0.5mg / L medium density fiberboard, high density fiberboard, particleboard, oriented particleboard and other furniture can be used for furniture and home improvement wood products, E0, E1, E2 is the detection standard of formaldehyde emission.

Q:How to do the corn stalks

Process Technology Line: 1. Straw density plate: Air dry straw → impurity removal → cut off → wind selection (blown out of the heart) → cans → high pressure steam → spray → fine → spray → drying → pavement → preload → hot pressing → edge → cutting → packaging → finished product 2. Straw crushed plate (particleboard) Drying Straw → Cutting → Wind Selection → Recovering → Drying → Screening → (Surface Layer, Dust, Core Material) → Mixing → Pavement → Preloading → Hot Press → Edge → Cutting → Inspection → Packaging 3. Straw composite board Straw → Cutting → Steam Blasting → Mixing → Paving → Wood Veneer → Glue → Preloading, Hot Press → Side → Varnish → Sanding → Finished 4. New wall materials: Corn stover high grain straw → election → leaves → cut → pavement → irrigation → do the surface layer → veneer → sanding → finished In addition to the above processing, the straw can also be used for pulp making after steam blasting, which is about a third less expensive than traditional pulping methods and only one third of the traditional method. It is helpful to solve the problem of pulp gap caused by the forced cessation of small papermaking by the state. Fourth, the main technical key and expected to achieve the technical and economic indicators: 1. Main technical key: ① developed as low as possible, environmentally friendly, waterproof superior, infiltration of a good name of the glue. ② design and improvement of grading pavement. ③ steam blasting equipment selection and the determination of the main process parameters. ④ hot pressing and cold pressing process parameters adjustment. 2. Expected technical and economic indicators: ① adhesive; solid content: 60% -65% ??????????Free formaldehyde content: 0.2% or less ??????????Viscosity: coated with 4 cups: 30 ℃ 10-20 seconds (fiberboard) ?????????????????????????????????50-65 seconds (particle board)

Q:How to go to the market to pick a good plate?

1, the choice of woodworking board is particularly important. It is recommended to buy Glulam, because the laminate is solid wood, no outer skin, not easy to make fake. If you use blockboard, choose the big manufacturers, such as Langfang Jinqiu, Zhejiang Moganshan, the board was above the manufacturer's security check phone. And each board has its only serial number, like a person's identity card, can not do the fake! 2. Australian pine board is now mostly domestic, but little impact on the quality of decoration, as long as the quasi-price, it will not be too fooled. 3. The choice of the first panel depends on the color texture of the veneer, the natural veneer has a slight color difference, the artificial veneer texture is very consistent, but looks fake; followed by the bottom plate material, Liu An core floor is now very little, the panel snapped inside the folder wire. Poplar core prone to primer dialysis, a long time the surface of the paint pollution. Zamu core of the basic quality can be, and economic and durable. In fact, it is easy to say, but the layman is difficult to see inside the essence, it is best to ask a professional friend to help choose.

Q:What is the difference between a sunglasses or a sheet of plastic?

Remove the sunglasses lens quality factors, the greatest impact on the price of sunglasses should be brand value-added and material caused by the different costs. Brand value added here is not discussed, this thing in the selection of sunglasses when the wise, can not tell a right and wrong. Then we talk about the material of the sunglasses frame. Compared to other materials, the use of sheet and plastic sunglasses frame on the surface is not see the difference. First of all, the plate frame is a memory function, if you buy the sunglasses mirror legs for you too tight or too loose, then you can adjust the mirror legs, straighten the bend is not a problem, but also inside and outside the bending Adjustment. If it is a plastic material sunglasses frame, a small adjustment does not work, it will automatically change back to the prototype, if a substantial adjustment - it will not change back to the prototype, because it has been broken ... Secondly, from the details, the frame of the frame to wear more comfortable, the basic will not appear discomfort. The plastic frame in addition to the overall structure is relatively stiff, is not conducive to the adjustment, the external paint may also be processed, there will be irritating smell. Finally, the frame of the frame will have steel (think of reinforced concrete, there are wood), durable. Plastic frame it, in addition to plastic or plastic, can be used to know how long days. So look at the appearance, you can not find the difference between these sunglasses.

Q:Why do you say that the dew river plate is good?

Up to now, no one in the world has been able to provide E0-level test reports because E0 is a standard rather than a standard for particleboard environmental protection. It can be said that it is in the concept of publicity. Mainly hope that consumers can pay attention to the environmental issues of sheet metal. ???? Lu River is the pride of our domestic enterprises! The ???? Because we have done a lot of cabinets cabinet products export business, we have done in the Procuratorate Lu Shuihe plate testing, the formaldehyde detection value is the unit content of formaldehyde content of 0.425ml, so, from a conceptual point of view, it The detection value is very environmentally friendly, worthy of our business and customer trust. ???? To believe: Chinese goods, no less!

Q:My family bought a cupboard made of melamine board these, a week or after the taste? These taste has no harm? Is there a methanol? Is it good to use these furniture?

Melamine board, also known as double decorative panels, paint panels, ecological board, it was called a molding board. Its substrate is also particleboard and MDF, made by the substrate and the surface bonding, the surface veneer mainly domestic and imported two categories, because it is after the fire, anti-wear, waterproof soaking treatment, the use of results Similar to the composite wood flooring. Melamine decorative board performance: 1, can be any imitation of a variety of patterns, bright color, for a variety of wood-based panels and wood veneer, hardness, wear resistance, good heat resistance. 2, chemical resistance in general, can resist the general acid, alkali, grease and alcohol and other solvent wear. 3, the surface smooth and smooth, easy to maintain cleaning. Melamine board with natural wood can not both the excellent performance, it is often used for indoor construction and a variety of furniture, cabinets on the decoration. Melamine board is a wall decoration material. Some people use melamine board counterfeit flooring for floor decoration, which is not appropriate. Common specifications: 2440mm × 1220mm, thickness 1.5-1.8Cm.

Q:What is the good dressing wardrobe plate?

In the absence of economic considerations, it is recommended to choose a solid wood wardrobe. If the budget is not a lot, you can choose the plate wardrobe, and now the market is the mainstream plate is MDF and particle board, midline board easy to shape, you can make a lot of shape, more beautiful; you can go to China plate trading online to see.

Q:Pine and plate which is better

Pine 1 pine wood furniture selection, design and manufacture of pine coniferous forest species, due to high forest coverage, all the trees are basically gone. 2 artificial pruning, making the processing into the material, the branches are left behind the natural The traces of growth. In the making of furniture, more fully demonstrated Material is real, foolish and natural beauty. 3 Most of the pine furniture modeling simple and generous, full of smooth lines, less carving processing methods of environmental health. 4 good pine furniture after regular maintenance, the general use of life Life longer, maybe also as a family heirloom generation pass it! 5 high-quality pine furniture will emit a unique smell of logs, may have just started some people will not get used to, but this is special Special smell of the human body is not only harm and also conducive to good health Oh. oak 1 oak furniture, wood is relatively hard, relatively strong stability, texture is relatively clear, made out of furniture durable, very simple fashion. Made out of the furniture are very upscale, especially suitable for European furniture. 2 oak structure rough, elegant color, wear resistance, a lot of decoration, furniture, flooring and so on materials, have chosen to use oak to create. Practical comparison of wide, highly absorbent, but also corrosion-resistant, with it to do the quality of solid wood furniture is very good. 3 oak material because the comparison in the country less, so the relatively high price of oak furniture. Oak furniture, hard texture, in fact, it is its shortcomings, so that the moisture in the furniture is not easy to completely dry, a long time more easily rotten. 4 oak furniture is relatively easy and rubber wood furniture confused, will affect the consumer's judgment. In the domestic oak furniture, although the process is very good in all aspects, but the general oak furniture is not a good maintenance, then after a year or so may be the old contraction.

Q:What is the board made of wood chips

According to the composition of wood chips, MDF or particleboard. These boards are generally used to do wardrobe backplane, where hardness is not demanding. Foshan, Jisheng Osaka. There are several years of custom design experience wardrobe.