Company News
Industry News
Knowledge
Contacts: Maggie Yu
Tel: +86-0755-28035808
Fax: +86-0755-28035808
Phone/Wechat: 0086-18038069461
E-mail: yyh88@snowfan.com.cn
Time:2021-09-14Views:0
High frequency microwave PCB circuit board exposure has two types: line exposure and solder mask exposure. The function is to cure the irradiated local area through ultraviolet light irradiation, and then develop it to form a circuit pattern or a solder resist pattern.
The process of circuit exposure is to put a photosensitive film on the copper clad board, and then put it together with the circuit pattern negative and expose it with ultraviolet rays. The photosensitive film irradiated by ultraviolet rays will undergo polymerization reaction. The photosensitive film here can resist Na2CO3 weak alkali during development. The solution is washed away, and the non-sensitized part will be washed away during development. In this way, the circuit pattern on the negative film is successfully transferred to the copper clad board;
The process of solder mask exposure is the same: apply photosensitive paint on the circuit board, and then cover the area that needs to be soldered during exposure, so that the pads are exposed after development.
What is the difference between ball bearings and oil-impregnated bearings for cooling fans?
2021-11-08Do you know what are the commonly used bearings for cooling fans?
2022-03-09About the cause and treatment of DC fan noise
2021-11-23What are the 4 wires of the computer CPU cooling fan?
2021-09-01Can the speed of the micro cooling fan be adjusted?
2022-01-13Electric fan: how high temperature and physiology interact
2021-11-24Can cooling fan manufacturers customize high-volume DC 9V fans?
2021-09-23Learn about monitoring and protection of DC fans
2022-04-08the speed of the cooling fan?
2021-12-13Can the cooling fan be silent?
2021-12-01Does the unobstructed air outlet affect the cooling fan?
2021-09-02The three-phase star connection of the DC cooling fan has a variable frequency motor control circuit
2022-03-17the DC cooling fan burn if connected
2021-12-09What are the voltage specifications of the DC cooling fan
2021-11-02Reasons and solutions for the electric fan not turning
2022-04-06Power saving tips for electric fans
2022-05-06Which type of cooling fan is prone to noise?
2021-11-10Does the cooling fan work at low temperatures have an impact?
2021-10-21Different types of cooling fans
2022-05-16Analysis of the influence of the installation method of the cooling fan on the life?
2021-12-01How to realize the silent cooling fan?
2021-08-02What are the requirements for non-standard samples of axial flow cooling fan manufacturers?
2021-08-27Why are oil-contained cooling fans prone to noise?
2021-12-16How are the cooling fan manufacturers under the new crown epidemic in 2021?
2021-08-03Why is the cooling fan developing so fast in China?
2021-08-30What are the requirements for cooling fans for Bitcoin mining machines?
2021-08-1210MM thick cooling fan, what is a strange phenomenon in the industry
2022-01-19Why is the radiator fan that is exhausted to dissipate heat more easily than the blower
2021-09-16Why are fans mostly square, can they be made into rectangles?
2022-01-07How does the DC blower work?
2022-01-14The main application areas of DC cooling fans
2022-04-25What are the advantages of imported cooling fans?
2021-09-09How do manufacturers do dust-proof cooling fans?
2021-12-28Four details to pay attention to when using a DC blower
2022-05-19Factors for the rapid rise of a large number of domestic excellent DC fan brands
2022-03-14Guidelines For The Use Of Axial Fan Blades
2021-04-28Which is better, AC fan or DC fan?
2022-01-05What are the factors related to the life of the cooling fan?
2021-10-13What is the reason why the cooling fan in the air purifier does not rotate?
2021-09-24Why is the fan not turning?
2022-04-02Analysis of the reasons for the cooling fan rotation stall
2022-03-02How is the cooling fan designed
2021-12-25Application of Photodiode
2021-12-08Micro Fan - What kind of equipment are cooling fans mainly used in?
2022-03-15What information does the manufacturer need to make a cooling fan sample?
2022-01-25Axial fans and centrifugal fans
2022-04-08iring shall be installed by professionals
2021-12-23What does high frequency microwave PCB circuit board exposure do?
2021-09-14How DC Fans Work
2022-05-12How long is the life of the DC fan with high air volume?
2022-02-28What is the relationship between the power of the DC axial fan and the air volume?
2021-12-02Will the positive and negative poles of the DC cooling fan burn if connected reversely?
2021-09-13Why are most of the current cameras with infrared function
2021-09-10Monitoring and protection knowledge of DC fans
2022-05-13Cooling fan manufacturers tell you the source and solution of noise
2022-03-11How about the waterproof function of the cooling fan?
2022-04-12How to replace a laptop cooling fan
2022-03-28Will the current sensor be magnetized?
2022-04-13How to choose the cooling fan manufacturer of the mining machine? 2 tricks to get it done
2022-02-15Why do cooling fan manufacturers have to order several samples?
2021-09-09Is wireless charging slower than wired charging?
2022-02-14Features of DC blower
2021-12-14What is an electric fan made of?
2022-07-18What are the processes for the internal structure of the waterproof fan?
2021-11-11Cooling fan function introduction
2022-03-28Cooling fan manufacturers tell you the source and solution of noise
2022-03-08How much high temperature can the cooling fan resist?
2021-11-23How does the installation method of the cooling fan affect the service life?
2022-01-26What is the gap between domestic cooling fan manufacturers and foreign manufacturers?
2021-09-15Mainly the fan with oil-containing structure.
2022-03-02What specifications are good for the ventilation fan of the air purifier?
2021-08-24DC fan suppliers discuss with you the main factors of fan cooling
2022-03-10What are the specifications of the silent fan Jingyangda?
2021-12-06DC fan suppliers discuss with you the main factors of fan cooling
2022-03-07How to deal with the noise of the micro cooling fan
2021-12-25Design steps of cooling fan
2022-03-01Can 4010DC fans be made waterproof?
2021-08-23What common questions should be paid attention to during the application of cooling fans?
2022-01-17Factors for the rapid rise of a large number of domestic excellent DC fan brands
2022-03-09The price of cooling fan manufacturers is different, what is the poor performance?
2021-08-10How much is the power of a household fan
2022-04-01Application field of DC fan
2021-11-05What are the processes for the internal structure of the waterproof fan?
2021-11-18Disassemble the components of the cooling fan
2022-05-10Why is the 3007 silent fan difficult to achieve, and is there any good way?
2022-02-18Do you know what are the commonly used bearings for cooling fans?
2022-03-14How to choose the cooling fan manufacturer of the mining machine? 2 tricks to get it done
2021-08-11Why does the cooling fan manufacturer require a minimum order quantity, isn't it a standard product?
2022-02-16How to choose a silent fan?
2021-08-16Estimated service life of cooling fan hydraulic bearings and double ball bearings
2021-12-24the advantages of imported cooling fans?
2021-12-10Explain the components of the cooling fan
2022-05-17Advantages and structural defects of hydraulic fans
2021-12-27Why does the ultra-thin cooling fan 3007 often have noise problems?
2021-09-26What types of cooling fans are there?
2022-03-24What is the gap between domestic cooling fan manufacturers and foreign manufacturers?
2021-09-29Axial fans and centrifugal fans
2022-05-16What is the structure of the fan
2022-07-18Where are the cooling fan manufacturers mainly concentrated
2021-09-29Why is the 4010DC cooling fan so cheap?
2021-08-24Is it sufficient to increase the speed of the high-volume cooling fan?
2021-09-13Can cooling fan manufacturers customize high-volume DC 9V fans?
2021-12-17About the cause and treatment of DC fan noise
2021-11-19A comprehensive introduction to DC cooling fans
2022-04-25What are the requirements for the cooling fan of the charging pile?
2021-09-17What is the gap between domestic cooling fan manufacturers and foreign manufacturers?
2021-09-16Discussion on whether the computer power fan is muted
2021-10-25Preventing Excessive Vibration of Industrial Equipment Cooling Fans and Vibration Reduction Scheme
2022-05-18DC cooling fan
2022-05-17The core difference between 4010 cooling fan and 4020 cooling fan
2021-08-05Cooling fan manufacturer Chengda shares with you the cleaning skills of fans
2022-03-10What is the quality of the fans used in the LED lighting industry?
2021-11-09What is the reason why the cooling fan in the air purifier does not rotate?
2021-12-17Reasons and maintenance methods of electric fans not rotating
2022-04-01Is it sufficient to increase the speed of the high-volume cooling fan?
2022-04-20Why is the cooling fan squirting oil?
2021-10-18Cooling fan manufacturer Chengda shares with you the cleaning skills of fans
2022-03-07What is the method of controlling and adjusting the speed of the cooling fan?
2021-10-15The main structure and working principle of electric fan
2022-04-21What factors need to be considered for the reliability of the cooling fan?
2021-12-07What fields are DC cooling fans mainly used in
2022-04-26What is the root cause of the cooling fan failure?
2021-11-23Can the speed of the DC fan be adjusted?
2021-11-02The main points of using the air purifier cooling fan
2022-04-18What is the difference between a DC cooling fan and an AC cooling fan?
2021-09-06What is the root cause of the cooling fan failure?
2021-11-19What is the reason why the cooling fan in the air purifier does not rotate?
2021-09-22What are the processes for the internal structure of the waterproof fan?
2022-02-24How to choose a manufacturer for the cooling fan of the mining machine case to reduce the cost
2021-08-13What are the factors related to the life of the cooling fan?
2021-10-14The heat dissipation characteristics of axial fans
2021-08-18Noise formation and treatment of cooling fan?
2022-05-20Can the DC cooling fan vibrate with high intensity?
2021-09-28Can the inventory of the cooling fan manufacturer be purchased?
2021-08-09What are the characteristics of the charging pile cabinet fan?
2021-08-18What information does the manufacturer need to make a cooling fan sample?
2021-09-14What are the advantages of DC direct floating hot fans?
2022-01-10Must-see for fan
2021-11-25Tell you what to pay attention to when choosing a cooling fan for communication equipment
2022-03-04Will the 12V cooling fan be damaged if the voltage is lower than the rated voltage?
2021-11-11Can the cooling fan pass the salt spray test?
2021-08-02Share DC fan speed with temperature control function
2022-03-03The structure of the electric fan
2022-03-22Repair of electric fan not rotating
2022-04-02Analysis on whether the air outlet is not unblocked has an effect on the cooling fan?
2021-10-14Teach you to distinguish the types of cooling fans
2022-04-15The development trend of cooling fan
2022-04-11What is the reason for the noise of 4010 DC fan?
2022-01-20the current cameras with infrared function
2021-12-09cooling fan manufacturers have to order several samples?
2021-12-10How to use only two cooling fans with three lines?
2021-09-18Analysis of the source of DC fan noise
2021-11-16Will the positive and negative poles of the DC cooling fan burn if connected reversely?
2022-04-20Heat waves will change the way of life in the future
2021-11-25Characteristics of DC Blowers
2022-05-13Can the DC cooling fan vibrate with high intensity?
2021-12-16Which frameless cooling fan or framed cooling fan has the largest air volume?
2021-08-06Cooling Fan - Structure
2022-03-29Can waterproof fans work at low temperatures?
2021-11-01What should be paid attention to for the cooling fan of the new energy charging pile?
2021-08-17How dustproof and reliable the cooling fan is
2022-01-22Can cooling fan manufacturers customize high-volume DC 9V fans?
2021-09-24What effect does jitter have on performance when the cooling fan is running?
2021-12-20Electric fan: distinguish between dry heat and damp heat
2021-11-24Disassemble the components of the cooling fan
2022-04-22What is the reason for the slow start of the electric fan
2022-04-27Why do cooling fan manufacturers want to get an air volume tester
2021-08-20hou much do you know about the working principle of fan cooling
2021-12-24How do manufacturers do dust-proof cooling fans?
2022-02-22What are the technical treatments for the internal structure of the waterproof fan?
2021-11-08What is the difference between a hydraulic cooling fan and an oil-contained cooling fan?
2021-10-08How to fix the slow start of the electric fan
2022-04-27How do manufacturers do dust-proof cooling fans?
2022-02-14What are the processes for the internal structure of the waterproof fan?
2022-01-04How to use and maintain electric fans
2022-05-06How to choose the cooling fan manufacturer of the mining machine? 2 tricks to get it done
2021-12-28What should I do if the computer fan is loud
2022-03-25The price of cooling fan manufacturers is different, what is the poor performance?
2022-01-17Smart toilet cooling fan cleaning tips
2022-04-18Why are small fans difficult for manufacturers of cooling fans to design temperature control and spe
2021-08-27What does the life span of the cooling fan have to do with?
2021-08-05How long is the life of 4010 DC fan with high air volume?
2021-08-23Why is the stock 4010 fan so cheap?
2021-08-30Troubleshooting method for notebook CPU cooling fan
2021-10-25Analysis on whether the cooling fan can be waterproof after adding lubricating oil?
2021-10-13What are the fans used for heat dissipation in electric vehicle charging piles?
2021-08-17The main application areas of DC cooling fans
2022-05-11Did you know that the air is continuously recirculated in the unit of the DC fan coil unit?
2022-03-18Analysis of DC fan and its working principle
2021-10-20The parameters of the cooling fan of the Antminer are revealed, and the price is unbelievably low
2021-12-07What is the difference between a DC cooling fan and an AC cooling fan?
2021-09-07What is the difference between ball bearings and oil-impregnated bearings for cooling fans?
2021-11-15Will the 12V cooling fan be damaged if the voltage is lower than the rated voltage?
2021-11-16Talk about the reason why the cooling fan does not turn
2021-10-21What are the processes for the internal structure of the waterproof fan?
2021-11-18Why are oil-contained cooling fans prone to noise?
2021-09-28The cooling fan is used to force the radiator through the wind speed
2022-03-16Advantages and structural defects of hydraulic fans
2022-02-19Can the speed of AC fan be adjusted?
2022-01-27Teach you how to use a DC fan
2022-04-07Take you to see what is a DC fan
2022-01-17Can cooling fan manufacturers customize high-volume DC 9V fans?
2021-09-22Analysis of the failure and cause analysis of the cooling fan
2021-10-13Analysis on whether the air outlet is not unblocked has an effect on the cooling fan?
2021-10-12What is the difference between a heatsink and a fan on a computer?
2022-03-23What is the air volume unit conversion for DC cooling fans?
2021-12-03Why do ultra-thin 2006 cooling fans often have noise problems?
2021-10-11Classification and application of fans in our lives
2022-04-11Advantages and Performance of DC Cooling Fans
2022-04-15What information does the manufacturer need to make a cooling fan sample?
2021-12-20About the waterproof design of the cooling fan of the charging pile cabinet?
2021-08-16A comprehensive introduction to DC cooling fans
2022-05-10The air volume of the cooling fan is related to the air pressure of the cooling fan
2022-01-24Analysis of why the waterproof fan has a backwind phenomenon?
2022-02-27What is the working principle of the DC fan coil unit?
2022-03-15Why do cooling fan manufacturers have to order several samples?
2022-04-19Can waterproof fans operate at low temperatures?
2021-10-20Silicon oil fan clutch structure composition
2021-11-26What is the difference between a hydraulic cooling fan and an oil-contained cooling fan?
2021-09-06Mergers and acquisitions integration and capital operation among large DC fan manufacturers are beco
2022-04-14What are the factors related to the life of the cooling fan?
2021-10-18What are the purchasing skills of electric fans?
2022-05-09What are the advantages of imported cooling fans?
2022-04-19Analysis of the source of DC fan noise
2021-11-10increase the speed of the high-volume cooling fan?
2021-12-09Small, tiny, ultra-thin cooling fan the size of a fingertip
2022-04-12What is the specific meaning of the air volume parameters of the cooling fan?
2021-10-11The speed of the cooling fan
2021-12-22Can the speed of the micro cooling fan be adjusted?
2022-01-08How to choose a cooling fan to be more silent?
2021-10-15It may be the driving force behind the noise of the cooling fan!
2021-08-04Common faults of cooling fans and their solutions
2022-02-28How to choose the current and voltage sensor power supply?
2022-04-13Do you know how the fan works?
2022-04-26How to solve the noise problem of cooling fan
2022-03-16How DC Fans Work
2022-04-06DC fan permanent magnet motor has excellent controllability advantages
2022-03-11What is the difference between a 3-wire and 4-wire CPU cooling fan for a computer?
2021-09-01What is the effect of the waterproof fan?
2021-11-03What is the reason why the cooling fan in the air purifier does not rotate?
2021-12-21Fan manufacturers
2022-04-22How can the Raspberry Pi 3rd generation DC fan 3007 be quieter?
2021-08-26What effect does jitter have on performance when the cooling fan is running?
2021-09-14electric fan
2022-04-21What is the main reason for the quality of the declassified cooling fan?
2021-08-04Does the cooling fan work at low temperatures have an impact?
2021-10-19The main components of the electric fan
2022-07-19Teach you how to use a DC fan
2022-05-12Can the cooling fan be dustproof?
2021-10-19The correct way to open the DC fan accessories
2021-12-24How long can the manufacturer of 4010 cooling fan guarantee?
2021-12-27How do manufacturers do dust-proof cooling fans?
2021-08-11How to choose the cooling fan manufacturer of the mining machine? 2 tricks to get it done
2022-02-23How to choose a cooling fan to be more silent?
2021-09-02How electric fans work
2022-03-22The working principle of silicone oil fan
2021-11-26How to increase the air volume/wind/pressure of the cooling fan?
2022-02-18Where are the current weaknesses of domestic cooling fan manufacturers?
2021-08-20Is it possible to install the computer cooling fan backwards?
2021-11-09Can cooling fan manufacturers customize high-volume DC 9V fans?
2021-12-21What are the protection requirements for the cooling fan of the charging pile?
2021-08-19What effect does jitter have on performance when the cooling fan is running?
2022-01-24What is the warranty period for the cooling fan?
2021-08-03What are the characteristics of lightweight DC fans for drones?
2021-12-06Understand the installation essentials of DC fans
2021-12-22What are the processes for the internal structure of the waterproof fan?
2021-11-23About the air volume and pressure of the cooling fan in front of you
2021-08-06Reasons and repair methods for household floor fans not rotating
2022-03-21How to solve the noise problem of cooling fan
2022-03-17How to remove the cooling fan on a desktop computer?
2022-03-23What methods can improve the quality of cooling fans?
2022-01-15How to choose a more reasonable DC axial fan
2021-08-19What is the difference between a DC cooling fan and an AC cooling fan?
2021-10-08What are the tips for cleaning the dust of the cooling fan
2021-10-28How to use electric fan for baby
2022-05-09What is the cause of the tripping of the cooling fan of medical equipment?
2022-05-18How is DC fan better than AC fan?
2022-01-06Introduction and Application of Photodiode
2021-09-10New product development, how to quickly choose a suitable cooling fan
2022-02-18Do you know how the fan works?
2022-03-25Safe operation and long service life is a major feature of DC blower products
2022-04-11Essential tips for life: how to use the cooling fan correctly
2022-07-15Can the tolerance of the DC cooling fan be reduced?
2021-09-26Why does the cooling fan manufacturer have no inventory?
2021-08-10Does the cooling fan work at low temperature have any effect?
2021-08-13What are the correct steps to install a DC fan?
2021-11-05Where are the cooling fan manufacturers mainly concentrated
2021-09-15What are the advantages and characteristics of the DC fan produced?
2022-03-04DC fan permanent magnet motor has excellent controllability advantages
2022-03-09Why is there a quantity requirement for the cooling fan?
2021-12-14The cooling fan is used to force the air supply to the electronic radiator through the wind speed
2022-03-18The structure of the electric fan
2022-07-19Is the PWM function of the DC cooling fan design quieter?
2021-08-25Features of DC blower
2021-10-26What determines the price of a DC fan
2021-10-28Why is it difficult for manufacturers of small fans to design temperature control and speed regulati
2021-08-27Ubiquitous computer cooling fan
2022-04-14Why is there a quantity requirement for the cooling fan?
2021-10-26Why does the cooling fan manufacturer have no inventory?
2022-01-18Which cooling fan is better?
2022-03-24Are more computer fans better?
2022-03-29Interpretation of the heat transfer method of low-noise DC fans
2022-03-03What is the difference between a hydraulic cooling fan and an oil-contained cooling fan?
2021-09-07Talk about the reason why the cooling fan does not turn
2021-11-03choose a cooling fan to be more silent?
2021-12-13How to solve the noise of the cooling fan of the mining machine chassis?
2021-08-12Can the DC fan speed be adjusted?
2021-08-25What is the difference between a DC fan and an AC fan?
2022-03-01What is the effect of the waterproof fan?
2021-11-01Do you know how the fan works?
2022-05-11Briefly describe the characteristics of the DC blower
2022-04-07What is the reason why the cooling fan in the air purifier does not rotate?
2021-09-23Will the power cord of the cooling fan burn if it is connected upside down?
2021-08-09