Q:Guangzhou red cotton plate and ordinary moisture board What is the difference

A moisture-proof one is not moisture it

Q:What are the differences between FR5 sheet and FR4 sheet?

FR-5 has better advantages than FR-4: 1, TG, TD higher; 2, better heat resistance, about twice the normal FR-4; 3, Z-CTE smaller, suitable for high Laminates; 4, T288 better.

Q:What are the characteristics of KRD blue epoxy sheet?

"KRD blue epoxy plate" in 1938 by the German company in Switzerland patent application in Switzerland, 1946 secretly put into operation in the high-end military plate, in 2008 Germany Kerui De company in the original epoxy board formula based on improved by adding KRD blue Water resistant weather factor, to produce high-end "KRD blue epoxy plate", put the German market, mainly used in luxury cruise ships and high-end cars and high-end interior furniture production. October 2009 European style (Hong Kong) bathroom International Development Co., Ltd. formally introduced "KRD blue epoxy plate" production line into the civilian bathroom furniture production. ????"KRD blue epoxy sheet" has a strong chemical resistance and water resistance. In the curing system of ether, benzene ring and fatty hydroxyl is not susceptible to acid and alkali erosion. Can be used for two years in seawater, petroleum, kerosene, 10% H2SO4, 10% HCl, 10% HAc, 10% NH3, 10% H3PO4 and 30% Na2CO3, and half a year at 50% H2SO4 and 10% HNO3; % NaOH (100 ° C) for a month or soaked in fresh water for 50 years, the performance remains the same. ????"KRD blue epoxy plate" molecular chain structure contains two or more epoxy groups of polymer compounds, process performance is good, strong nail holding force, product size and stability, no radiation, zero formaldehyde, is the current The forefront of the international environmental health, strong weather resistance of high-end furniture preferred plate. "KRD blue epoxy plate" Appearance features: A high density light B The appearance of the plate is light blue C strong flexibility

Q:Circuit board plate classification, distinction between advantages and disadvantages

Circuit board plate classification: FR-1: flame retardant copper foil phenolic paper laminate. IPC4101 detailed specification number 02; Tg N / A. FR-4: Flame Retardant Copper Foil Epoxy E Glass Fiber Cloth Laminate and Its Adhesive Sheet Material. IPC4101 detailed specification number 21; Tg ≥ 100 ℃; Flame Retardant Copper Foil Modified or Unmodified Epoxy E Glass Fiber Cloth Laminate and Its Bonded Sheet Material. IPC4101 detailed specification number 24; Tg 150 ° C to 200 ° C; Flame Retardant Copper Foil Epoxy / PPO Glass Cloth Laminate and Its Adhesive Sheet Material. IPC4101 detailed specification number 25; Tg 150 ° C to 200 ° C; Flame Retardant Copper Foil Modified or Unmodified Epoxy Glass Cloth Laminate and Its Bonded Sheet Material. IPC4101 detailed specification number 26; Tg 170 ℃ ~ 220 ℃; Flame Retardant Copper Foil Epoxy E Glass Cloth Laminate (for Catalytic Addition). IPC4101 detailed specification number 82; Tg N / A; 94vo-cem-1. Good and bad distinction: meet the standard for the excellent, do not meet the specifications for the poor.

Q:What is the sheet inside that?

Blockboard Plywood Plywood Gypsum board There is a brand on the market is Hong Kong Snow Po plate brand seems to be good

Q:The most commonly used gas shielded welding consumables are certainly different from the material being welded. The silicon content and the manganese content in the wire are higher than those in the material. And the sulfur content inside the wire is much lower than the sulfur content of the base material being welded. Here, the role of silicon manganese is in the welding arc, in the welding bath for deoxidation of the chemical reaction, the other silicon manganese infiltration of the base metal can also improve the strength and plastic of the weld metal.

1, in most cases, sheet material and welding material is certainly not the same, the two are not comparable. 2, the plate is usually made of standard size flat rectangular building material board, for walls, ceilings or floor components. Also refers to the forging, rolling or casting made of metal plate. Divided into thin plate, medium plate, thick plate, special thick plate, usually made of standard size flat rectangular building material board. 3, the wire is used as a filler metal or as a conductive wire welding material. In the gas welding and tungsten gas protection arc welding, the wire used as a filler metal; in submerged arc welding, electroslag welding and other melting gas protection arc welding, the welding wire is both filled with metal, but also conductive electrodes. The surface of the wire is not coated with an oxidative flux.

Q:What is the quality of the snowboard?

Chevrolet board than the ordinary lunch box bubble to more than five times, relatively hard, the quality of the general, generally used in the more low-end place. Specifically you ask what the quality is not clear, you know these

Q:What is the standard size of the various plates? Decoration in a variety of plate specifications

Furniture plate commonly used specifications: 2440 * 1220mm commonly used thickness: 3mm, 5mm, 6mm, 9mm, 12mm, 15mm, 16mm, 18mm, 25mm.

Q:What is the concept of negative ion sheet?

Plate by nano-catalyst technology, can be released to the human body beneficial negative ions Negative oxygen ion radicals can kill a variety of respiratory infections, to prevent infection The sheet has the following functions: Dust: the dust in the air to gather, the strong collection of suspended particles, to prevent inhalation of the body, cut off the bacteria vector. Deodorization: remove all kinds of life smell, smell, improve the living environment. Smoke: the rapid elimination of oil in the air smoke, dust, put an end to secondhand smoke. Toxic: Remove all kinds of toxic chemical volatile gases in the air, eliminate "invisible killer". Health care: improve work efficiency, eliminate fatigue, improve heart and lung function, enhance the body immunity. Beauty: the epithelial cells with a negative charge, so that the bacteria lost the ability to attack the cells to keep the skin smooth. In addition to static electricity: life is generally positive static, will bring risks to the human body and mind health, negative ions and effective in this static. Add the living space of negative ions and reactive oxygen species: brain refreshing, eliminate fatigue, focus, improve work efficiency, prevent air conditioning disease, improve human living environment, so that human return to nature.

Q:South Asia, Health benefits, Teng Hui FR4, which is relatively expensive?

Health benefits of expensive, generally large PCB factory are selected benefits of the plate. South Asia is better ink, Tenghui metal substrate plate can also be