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Yes, some factories have expensive expedited fees! But the good thing is that a few companies have recently started to do not charge urgent fees, I have sampled the PCB in Jiepei, and the double-sided panel shipped to me the next day, they do not charge urgent fees, and the quality of the boards received is also good, you can go and see.
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How long does PCB proofing take depends on your requirements, single-sided PCB proofing is shipped in 4 hours, double-sided PCB is done in 8 hours, and four-layer board PCB is done in 48 hours, which is based on the actual experience of Shunyijie PCB.
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As long as it is a PCB circuit board, it can be proofed. However, there are several types:
Hour expedited proofing.
Hour expedited proofing.
Hour expedited proofing.
4. Ordinary cycle proofing.
The above are all according to your proofing needs, and the products are not in a hurry. You can choose from each one, and each type will be relatively different.
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**According to the report, the Pearl River Delta enterprises, the largest circuit board production base in China, suffered a PCB environmental protection storm. As of last week, Foshan alone had dispatched nearly 10,000 environmental law enforcement officers and shut down 793 enterprises. PCB enterprises and related electroplating enterprises have become the key areas of this PCB environmental protection inspection.
The industry believes that with the increase in environmental protection costs, small and medium-sized PCB enterprises have withdrawn due to the continuous narrowing of profit margins. Founded in 2009 in Bao'an, Shenzhen, Tianxingjian Electromechanical is a cleaning equipment manufacturer with the production purpose of "energy saving, consumption reduction, pollution reduction and efficiency increase". Cooperating with many leading enterprises in the PCB, optoelectronics and other industries for many years, the company has put into use the equipment centrifugal deaerator, high-pressure deaerator and other products.
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1. Pengding Holdings (Shenzhen) shares****
Established on April 29, 1999. The legal representative Shen Qingfang, the company's business scope includes: production and operation of new electronic components, automation equipment and its spare parts, precision molds and their parts, all kinds of printed circuit boards, electronic information product boards, etc.
2. Suzhou Dongshan Precision Manufacturing Co., Ltd. ****
Founded in 1998, it was established by Suzhou Dongshan Sheet Metal Co., Ltd. as a whole. Mainly for communication equipment, new energy, precision machine tool manufacturing and other industries to provide customers including precision sheet metal parts, precision castings and assembly products and technical services, of which precision sheet metal parts are the company's leading products.
3. Jianding Technology Co., Ltd. ****
In 87 years in Taoyuan Pingzhen Industrial Zone mass production, then to provide world-class process capabilities and technology to customers around the world, has become the best business performance of more than 20,000 printed circuit workers, and will be put into production in Xiantao, Hubei Province to establish a new factory. The company will develop into a global PCB manufacturing center.
PCBs have the following functions in electronic devices:
1) Provide mechanical support for the fixation and assembly of various electronic components such as integrated circuits, realize the wiring and electrical connection or electrical insulation between various electronic components such as integrated circuits, and provide the required electrical characteristics.
2) Provide solder mask graphics for automatic welding, and provide identification characters and graphics for component insertion, inspection and maintenance.
3) After the electronic equipment adopts the printed board, due to the consistency of the same type of printed board, the error of manual wiring is avoided, and the electronic components can be automatically inserted or placed, automatically soldered, and automatically detected, which ensures the quality of electronic products, improves labor productivity, reduces costs, and is convenient for maintenance.
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PCB is the electronics industry.
The Chinese name is printed circuit board, also known as printed circuit board, which is an important electronic component, the support body of electronic components, and the carrier of electrical interconnection of electronic components. Because it is made using electronic printing car wide punching, it is called a printed circuit board. The printed circuit board is composed of an insulating base plate, connecting wires, and pads for assembling and welding electronic components, and has the dual role of conductive lines and insulating base plates.
The classification of PCB boards is as follows:
According to the circuit layer, it is divided into single-sided, double-sided and multi-layer boards. Common multi-layer boards are generally 4-layer boards or 6-layer boards, and complex multi-layer boards can reach dozens of layers. Single-sided sided is on the most basic PCB, where the parts are concentrated on one side and the wires are concentrated on the other.
Because the wires only appear on one side, this type of PCB is called single-sided.
Multi-layer boards: In order to increase the area that can be routed, multi-layer boards use more single- or double-sided wiring boards. With a double-sided inner layer, two single-sided as the outer layer or two double-sided as the inner layer, two single-sided as the outer layer of the closed printed circuit board, through the positioning system and insulation bonding materials alternately together and the conductive graphics are interconnected according to the design requirements of the printed circuit board becomes a four-layer, six-layer printed circuit board, also known as multi-layer printed circuit board.
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