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Know how to help see my description: We told our customers that our PCB is used KB6160 B grade material, and then the customer back to the message said " You are using the KB6160 (FR-4) application of reinforced plate, potentiometer, resistance film field, the lowest level of the kind of plate it! Is very bad.
KB6160 B grade material is defective.
What kind of sheet is usually used in the wardrobe?
Ecological board, fir board
Stainless steel sheet thickness of about 0.6 thick thick mm
In general, the thickness difference of stainless steel plate in a silk look, GB 0.5 actual thickness is 0.4,0.6mm thickness of 0.5, to 1.2mm above the stainless steel plate GB and the actual thickness of the gap between the larger, 2 silk is also possible, Mogo suggested that the landlord in the purchase of stainless steel plate, it is best to tell the other side you want the actual thickness, or the other side to bid price to stir up unnecessary trouble and misunderstanding.
Which glasses glasses and metal glasses is better?
In fact, nothing is good and bad, the plate is partial fashion a little, the metal may be durable some of the price of some of the metal, the plate is generally very cheap, if the age is not recommended to buy plate, I am not professional, before also In the up to buy online, asked the customer service, it is best to go to the glasses site asked the professional staff
Buy plate three errors is what?
At present, consumers themselves have many misunderstandings about the purchase of plates: ????"Trimming smooth and smooth plate must be good." This is not true. Perennial deal with the plate of a home improvement company boss said that the more such a plate of consumers more careful, trimming is generated when the machine sawing, good plate generally do not need "re-processing", often a lot of stubble child. But the quality of the plate because of its internal is empty, black core, so the processor will "deliberately dress up" it, in the trimming and then paste a "nice" wood, and polished smooth neat, to confuse the consumer , So you must not use this as a standard to measure what is good or bad. ????"3a is the best." Some readers reflect that they are doing the decoration in order to no problem, only selected marked "3a level" of the plate, the result is still a problem. In fact, the national standard is not "3a", but the business or business personal behavior, can not guarantee its quality. Currently on the market has not allowed the words, the detection of qualified wood will be marked "excellent goods", "first-class goods" and "qualified products." ????"The heavier the better plate". This view is absolutely incorrect, the insider to buy a look at the degree of drying, two see splicing. Good dryness of the plate is relatively light, and there will be no cracks, very smooth. For outsiders of consumers, the safest way is to reliable building materials market, buy some well-known brands of plates. In order to prevent some of the counterfeit products on the market, you must see whether the purchase of a national authority issued by the test report once the problem is also well documented.
What kind of wood is the water-based material? Environmental protection?
Water-based days is a professional engaged in water-based polymer research and application of high-tech enterprises. "Water-based technology, beautiful China" for the corporate mission, with the world's first water-based wet synthetic leather production line, China's first 100,000 tons of water-based polyurethane production line and China's first harmful chemical substances testing center. Water-based science days not only to create a new era of non-toxic home improvement, but also to promote water-based materials, furniture, synthetic leather and other areas of green environmental protection industry changes.
What kind of timber is the high grade guitar?
Ebony ebony senior guitar essential fingerboard material, natural black, wood is very hard, wood rich in oil ingredients, can guarantee a good feel. Indian rosewood rosewood is often used in guitar fingerboard parts, but not upscale, generally used in low-end guitar, wood hard, can effectively ensure that the fingerboard is not deformed, feel in general. Neck: Mahogany macrophylla has been introduced in front of the mahogany is very strong hard wood, used to make guitar neck can be very effective control guitar deformation. At the same time the mahogany charm of the wood so that every part of the guitar is very like a work of art. Spanish red pine Espain cedar is now very little use of the neck material, very precious. This kind of wood is much worse than the mahogany and the Spanish red pine wood, but in many guitar neck can still find this kind of wood, especially yamaha most of the guitar, will choose this kind of wood As the main material of the neck, and even for the dorsal board. A good guitar wood is generally made of these materials, as for the sound, because the different wood with the sound will be very different. In general, we often come into contact with the guitar material selection will be 1. spruce (panel) + rose wood (dorsal board) 2. spruce + mahogany 3. red pine + rose wood 4. red pine + Mahogany under normal circumstances guitar production will not be out of the scope of this configuration (of course, there are spruce + maple / cedar this combination of sound) mainly rely on to listen to a good guitar, need strong Strong resonance, clear with a grainy tone and a distinct chord sound. So if the conditions when the selection of guitar, then personally try to play or very necessary, after all, what is your favorite voice, and only you understand ah ~!
E0.E1 level is the level of formaldehyde content, the specific number is how much
The E0 grade of the sheet is the concept of formaldehyde emission limitation in the new national standard GB / T9846.1-9846.8-2004. The standard divides the formaldehyde limit level into three levels, namely: E1 level free formaldehyde release limit ≤5.0mg / L </ FONT> (meet the domestic standard), E1 free formaldehyde release limit ≤ 1.5 mg / L </ FONT> (in line with European standards), E0 level free formaldehyde release limit ≤ 0.5 Mg / L </ FONT> (the world's top standard). ???? E0 grade plate although the environmental standards are higher, but because it does not contain green moisture-proof agent and adhesive, its toughness and moisture resistance is relatively low, easy to tide fracture, generally used as furniture substrate, not suitable for use in the kitchen wet Environment. In addition, due to the higher price of E0 grade plate, consumers are usually unbearable, generally choose E1 grade plate.