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1. Classification: 1. Divided by appearance: circular electrical connectors are used in military equipment (aviation and aerospace) due to their own structure; rectangular electrical connectors are more used for printed circuit boards of electronic equipment due to their simple structure. on. 2. According to the structure: according to the connection method: threaded connection, bayonet (quick) connection, card lock connection, push-pull connection, in-line connection, etc.; according to the contact body termination form: crimping, welding, winding; screw (Cap) fixed; according to environmental protection points: environmental resistance electrical connectors and ordinary electrical connectors. 3. According to the purpose: radio frequency electrical connectors; sealed electrical connectors (glass sealing welding); high temperature electrical connectors; automatic fall-off and separation electrical connectors; filter electrical connectors; composite electrical connectors; airport power electrical connectors; Electrical connectors for printed circuit boards, etc. 2. Electrical connector structure: The electrical connector is composed of a fixed-end electrical connector (hereinafter referred to as a socket) and a free-end electrical connector (hereinafter referred to as a plug). The socket is fixed on the electrical component through its square (circle) plate (individually also by welding), the plug is generally connected to the cable, and the plug and socket are connected through the connecting nut.

Recently, we received some new customers' reactions that the keys could not be repositioned after welding the toggle switches purchased by other companies. According to our experience, it can be divided into the following aspects. 1, touch switch shrapnel itself is not elastic, in order to reduce the cost of using quality hidden shrapnel. 2. Welding temperature is too high. 2.1. The soldering temperature of the plug-in touch switch in the wave peak shall not exceed 240 ℃ /2 s or 235 ℃ /5 s; 2.2. SMT light touch switch reflow welding shall not exceed 270 ° C /2 s or 260 ° C /5 s; 2.3. The temperature of manual soldering iron should be controlled between 320-350 degrees Celsius, and the welding time should not exceed 2 seconds; 2.4 manual tin-dipping welding, welding temperature should not exceed 240 degrees Celsius /2 seconds; 2.5. The welding times of the same touch switch shall be controlled within 2 times. If the number exceeds the welding times, the quality risks will also be caused. 2.6 Pay attention to preheating before welding in all welding processes. There is a little difference in preheating for different PCB boards. Please consult PCB board manufacturers for details. 2.7. The above welding is only responsible for our products. There may be differences between the touch switches produced by different manufacturers. If your company needs to exceed the above time and temperature limits in the process of welding the touch switches, you are advised to contact us, and we will provide relevant suggestions for your reference. 3, light touch switch in the process of transportation or high temperature under the condition of strong extrusion, resulting in shrapnel deformation. There are also (less commonly) cases where the keys don't bounce back. 4. When doing the high temperature test, the light touch switch can not be in the conduction state for a long time, otherwise there will be shrapnel deformation leading to the key can not spring back

The plug-in series terminal blocks are used to realize electrical connection, and they are used for wiring. There is no strict difference, but the terminal blocks are usually used in the distribution box to facilitate wiring and generally bear less power. The plug-in series terminal block is made up of two parts plug-in connection, one part presses the wire tightly, and then plugs into the other part, this part is soldered to the PCB board. The mechanical principle of this connection bottom and this anti-vibration design ensure the long-term airtight connection of the product and the reliability of the finished product. Mounting ears can be added at both ends of the socket. The mounting ears can protect the tabs to a large extent and prevent the tabs from being arranged poorly. At the same time, this socket design can ensure that the socket can be correctly inserted into the mother body. The socket can also have assembly buckle and lock buckle. The assembly buckle can be more firmly fixed to the PCB board, and the locking buckle can lock the mother body and the socket after the installation is completed. A variety of socket designs can be matched with different matrix insertion methods, such as horizontal, vertical, or inclined to the printed circuit board. Either metric wire gauge or standard wire gauge can be selected. The plug-in terminal series adopts the easy-to-operate pluggable connection combined with the firm and universal screw method, which connects various parts

The terminal block is used to facilitate the connection of wires. It is actually a piece of metal enclosed in insulating plastic. There are holes at both ends for the wire to be inserted. There are screws for fastening or loosening, such as two wires. Sometimes Need to connect, sometimes need to disconnect, then you can use the terminal to connect them, and can be disconnected at any time, without having to weld or twist them together, it is very convenient and quick. And it is suitable for a large number of wire interconnections. In the electric power industry, there are special terminal blocks and terminal boxes, all of which are connected terminals, single-layer, double-layer, current, voltage, ordinary, breakable, and so on. A certain crimping area is to ensure reliable contact and to ensure that sufficient current can pass. Product application: Mainly used in lighting, communications, security and other industries. The application industries of plug-in terminals are the most dominant, such as frequency conversion, vandal-proof, numerical control panels, access controllers, sensors, PLCs, instruments, power supplies, and servo drives. These application industries have common to plug-in terminals. The requirements are: the insertion and extraction force must be stable, the contact resistance must be small, and a certain life and fatigue must be met, so the requirements for the hardware shrapnel material are higher. This requires product designers to have certain experience in structure and material selection. The main applications of barrier terminals are: power supplies, relays (especially double-layer terminals), frequency converters, elevator industry (less), air conditioners.

In 1928, Phoenix Contact invented the world's first modular terminal block. This is the prototype of modern terminals, and it is also the first invention patent that Phoenix Contact applied for and obtained. Since then, Phoenix Contact has been passionate about innovation, committed to the development of various connection technologies, and formed a complete electrical interface technology system, many of which have become industry application standards. The choice of materials directly affects the performance of the entire product and is the key to the design. Take plastic materials as an example: if the design is based on UL94 and V-0 flame retardant, it is necessary to carefully review whether the technical parameters of each material property table can be used. To meet product standards, such as whether the impulse withstand voltage and aging resistance tests can be passed, in terms of hardware materials, the choice of sheeting materials, which is mainly TP, is especially important, because the sheeting must not only meet a certain electrical conductivity (current), but also have a certain The elasticity of the metal has brought difficulties to our engineers in the selection of materials. This is precisely the trend that connector manufacturers are pursuing in elastic components. Many manufacturers of hardware materials are working hard in this regard, and the conductivity directly affects When it comes to temperature rise and contact resistance, the quality of elasticity is related to the chemical elements, elastic modulus, hardness, and tensile strength of the material. The elastic modulus is calculated by the fourth strength theory formula of material mechanics. The greater the electrical conductivity of the material, the lower the contact resistance, the lower the temperature rise. The plug-in force and the contact resistance have a quadratic relationship. The contact resistance is mainly divided into: compression resistance, film resistance, and volume resistance (the resistance of the conductor itself) . Among them, the film resistance accounts for 70-80% of the total resistance, which is also the main factor affecting the life of the connector. Full attention should be paid to the terminal gold plating and silver plating. Although the conductivity of silver is higher than that of gold, its chemical Stability is not as good as gold, and the film resistance caused by it is much greater than gold plating. Therefore, understanding the relationship between the above is of guiding significance for our choice of materials and is a prerequisite for product design.

Our company has always attached great importance to the quality of products. Yesterday, our general manager, Xu Wenwen, came to the workshop for a routine inspection. He stressed that the quality of products is the basis for an enterprise to survive. We must pay close attention to the quality. Only on the premise of ensuring the quality, can we increase the output.

There is a fitness center on the first floor of our company. There are a lot of employees exercising there during the rest time. There are ellipse machine, butterfly machine, Smith frame and other commonly used equipment. Elliptical machine is a common tool for cardio lung fitness training. The exercise with elliptical machine can not only prevent, reduce, alleviate cervical spondylosis, periarthritis and pain of upper back, but also avoid the impact of running, better protect the joint, and thus have better safety coefficient. Ellipse function exercises and stimulates the adjustment of sciatic nerve, enhances the endurance and strength of waist muscles, aiming at the buttocks and thighs.

We held a staff meeting last Thursday. At the meeting, general manager Xu Wenxue delivered an important speech. First of all, he made a general analysis of the company's current operating conditions. Then, the performance of each department staff was evaluated. Finally, he pointed out several points that can be improved. The general manager pointed out that our company's corporate belief is to provide best service with the fastest efficiency. Under the condition of ensuring quality, we must improve our work efficiency. In the past six months, our company's operation is in good condition, and the product update speed is fast. Compared with competitors in the same industry, we have a great advantage. [I hope we can work together to make our company a better future", said Mr. Xu.

Team building is a process that develops cooperation and teamwork within a work unit. To constitute an effective team, its members must share a common goal, have respect for each other, and be motivated to use the strengths of each member to achieve their objectives. Current corporate philosophy stresses that each member of a team plays an integral part in the success of the company. Last week, our company held a team building activity. We went to the countryside for a picnic. It was a fine day. We spread tablecloths on the grass, and put fruits, bread and biscuits on it. Some people even took kites with them. We all had a good time. Through this team building we achieved better understanding and promoted friendships, which are of great importance for the harmonious development of the company.

Terminal effect is very good, actually is a kind of connector terminals, is for the convenience of the connection wire and application, it is actually a seal inside the insulation plastic pieces of metal, with a hole at both ends can be inserted into conductor, a screw is used to tighten or loosen, such as two wire, sometimes need to connection, sometimes need to disconnect, They can then be connected with terminals and can be disconnected at any time without having to weld them together or wrap them together, which is very convenient and quick. Wiring terminal is used to achieve electrical connection of a kind of accessories products, industrial division belongs to the connector. With the higher and higher degree of industrial automation and industrial control requirements are more and more strict and accurate, the demand for terminals is increasing gradually. With the rapid development of the electronic industry, wiring terminals are used more and more widely and more and more kinds. Terminal can be divided into WUK terminal, European terminal series, plug and pull type terminal series, transformer terminal, building wiring terminal, fence type terminal series, spring type terminal series, rail type terminal series, through the wall type terminal series, Photoelectric coupling type terminal series, 110 terminal, 205 terminal, 250 terminal, 187 terminal, OD2.2 ring terminal, 2.5 ring terminal, 3.2 ring terminal, 4.2 ring terminal, 2 ring terminal, 6.4 ring terminal, 8.4 ring terminal, 11 ring terminal, 13 ring terminal flag type terminal and sheath series, all kinds of rings Type terminals, tubular terminals, wiring terminals, copper tape and iron tape (2-03, 4-03, 4-04, 6-03, 6-04), etc. At present, the most widely used PCB board terminal, hardware terminal, nut terminal, spring terminal

The through-wall terminal blocks can be installed side by side on panels of 1mm to 10mm thickness, and can automatically compensate and adjust the distance of the panel thickness to form a terminal block of any number of poles. In addition, isolation plates can be used to increase the air gap and creepage distance. Terminals can be divided into WUK terminal, European terminal series, plug-in terminal series, transformer terminal, building wiring terminal, fence terminal series, spring terminal series, track terminal series, through wall Type terminal series, photoelectric coupling terminal series, 110 terminal, 205 terminal, 250 terminal, 187 terminal, OD2.2 ring terminal, 2.5 ring terminal, 3.2 ring terminal, 4.2 ring terminal, 2 ring terminal , 6.4 ring terminal, 8.4 ring terminal, 11 ring terminal, 13 ring terminal flag series terminal and sheath series, various ring terminals, tubular terminals, wiring terminals, copper strip iron strip (2-03, 4-03, 4-04, 6-03, 6-04) etc.

Terminal block is a kind of component used as electrical connection device. As a passive device, current and voltage are introduced into PCB board or related electrical / electrical equipment, which is composed of terminal body, plastic case, screw or shrapnel structure. Terminal block classification: According to the fastening wires, they are divided into screw terminals and spring / clip spring terminals. According to the welding method is divided into: wave soldering terminal; reflow soldering terminal. According to the structural characteristics and materials, it can be divided into: PCB printed circuit board terminals, ceramic terminals, metal terminals, plug-in terminals. According to the space: 3.5mm,3.81mm, 5.00mm, 5.08mm, 7.5mm,7.62mm,10.16mm,12.7mm,14.5mm ... Terminal Blocks Connection Systems include screw-type IEC, spring-type IEC, IEC terminal block accessories, NEMA terminal blocks, NEMA terminal block accessories, finger-safe terminal blocks, and panel mount terminal blocks. We offer many terminal block products including double level plug-in, thermocouple, tab-connect feed through, grounding, space-saver feed through, fuse, sensor, plug-in connection, multi-circuit, mini, single circuit, neutral disconnect, isolation and more.

The Lingering Garden was listed from the first as cultural relics of national importance in 1961. With an area of 23,310 sq.m.it is celebrated for its artistic way of dealing with the spaces between various kinds of architectural form. Buildings make up one third of the total area of the garden, the hall of which being the most remarkable in Suzhou. The garden is separated into the middle , eastern, northern and western parts. The ancestral temple and the house lie to the south of the garden. Featuring man-made mountain and lake scenery in the west and garden courts in the east, the middle part of the garden is the original site of the Xu's East Garden and the Liu's Hanbi Villa, and is regarded as the best part of the whole garden. The eastern, northern and western parts are the extensions of the Sheng's Garden. The eastern part is noted for its strangely shaped limestones, the northern part idyllic scenes, and the western part the delights of woody hills. A winding roofed walkway behind the small entrance of the garden, while leading to the places of quietude, shows the masterly use of contrast between big and small, straight and zigzag, and light and shade. After strolling for about 50 meters, one can catch a glimpse of lattice-windows revealing a half visible landscape garden behind. Interestingly enough, the view is changing at every step. The middle part of the garden is centered upon a lake with man-made mountain in the north-west and a number of attractive buildings in the southwest ,such as the Hanbi Mountain Villa ,the Pellucid Tower, the Green Shade Pavilion, the Zigzag Stream Tower, the Hao Pu Pavilion, and the Refreshing Breeze Pavilion by the lake. The mountains made mainly of yellowstones and earth, believed to be designed and piled up by Zhou Binzhong, look very much archaic and splendiferous. The admirable Crane House, the Small Garden of Stone Forest, the Return-to-Read Study in the east with the Celestial Hall of Five Peaks as the chief structure are laid out in such a way that the indoor spaces have been brought into perfect harmony with the outdoor spaces. With an evocation of infinity, they are successfully made to be labyrinthine. Flanked by the Auspicious Cloud and Mountainous Cloud peaks, the 6.5-meter-high Cloud-Capped Peak, the highest limestone in the classical gardens of Suzhou, is believed to be left behind by the imperial collector of the Northern Song Dynasty, Mass of buildings, including the Old Hermit Scholars' House, the Cloud-Capped Tower, the Cloud-Capped Terrace and the Awaiting Cloud Temple, are put up to give emphasis to the Cloud-Capped Tower, The northern part is now a bonsai garden in which about 500 valuable bonsai are put on display. The western part of the garden sets a fine example of good-looking earthen hills studded with yellowstones and covered with maple trees. There is a winding brook lined with peach trees and weeping willows. The number of stelae in the Lingering Garden has never been surpassed by any other gardens in Suzhou. Superbly inscribed with the works of more than a hundred calligraphers in the Jin, Tang, Song, Yuan, Ming ,and Qing Dynasties, these invaluable stelae bring to light the evolutionary course of Chinese calligraphy in the past 1,000 years. The whole garden possesses with pride 42 rooms and halls , a 670-meter-long roofed walkway,200 lattice-windows of different kinds, 44 parallel couplets and stone carvings , 373 stelae, and 17 such valuable old trees as gingkoes, southern wisteria, etc. which fall into 8 catalogs.

This morning, our general manager, Mr. Xu, held a staff meeting. The focus of the meeting is to emphasize the importance of safety in production activities. We should not only ensure that our products are of high quality, but also ensure the safety of our production environment. Relevant departments must pay attention to regular inspection of our production workshop. We must ensure the safety of our workers. Only in this way, can the company get healthy and sustainable development.

Yangcheng Lake is located in the northeast of Suzhou City, across Suzhou City, industrial park, Xiangcheng District and Kunshan City. It is one of the important freshwater lakes in Jiangsu Province. Our company is located next to Yangcheng Lake. The scenery is beautiful and the air is fresh. Every time after work, there are always a lot of pedestrians walking by the lake. The night of Yangcheng town is smoke over the sky, Brighe moon trinidad. Nowadays Yangcheng Lake Crabs have brought remarkable economic and social benefit and promoted the development of local economy in some way.

Our company has always attached great importance to volunteer activities. In the past year, we went to many places to take volunteer activities . Just in the beginning of April, we went to the nearby streets and participated in the street cleaning work. We help the sanitation workers clean up the garbage on the road, classify the garbage and send it to the corresponding recycling point. Through this activity, we are deeply aware of the importance of environmental protection.

Our company canteen provides delicious food. Our company is located in Suzhou, a gourmet paradise. There are very famous Su Bang dishes here. Traditional Su Bang dishes include braised lion head, pickled duck, squirrel and mandarin fish. Su Bang food tastes sweet and light, which is very suitable for people who don't eat spicy food. Our company's canteen not only has Suzhou cuisine, but also has many other flavors, such as Sichuan cuisine, Anhui cuisine and so on. All employees can find dishes that suit their own taste here.

The fire fighting knowledge should be publicized, and fire fighting drill and evacuationdrill should be reinforced especially in such institutions as companies and schools. Appointin the personnel who have responsibility, proficient in operation skill, know the fire fighting knowledge and have a good health in charge of the fire security important section. Then, the emergency plans and the ontology knowledge model of fire emergency should be studied and built particularly. To bring into play the functions of society and fireprevention intervenors to develop fire prevention is vital to attract capital, introduce technology and popularize fire-prevention knowledge and raise the awareness of fire-prevention of the whole society.

Qing Ming is a time to remember the dead and the dearly departed. More important, it is a period to honour and to pay respect to one's deceased ancestors and family members. Because it reinforces the ethic of filial piety, Qing Ming is a major Chinese festival. Literally meaning "clear" (Qing) and "bright" (Ming), this Chinese festival falls in early spring, on the 106th day after the winter solstice. It is a "spring" festival, and it is an occasion for the whole family to leave the home and to sweep the graves of their forebears. Chinese being practical people this sweeping of the graves is given an extended period, that is, 10 days before and after Qing Ming day. Among some dialect groups a whole month is allocated. Qing Ming is popularly associated with Jie Zi Zhui, who lived in Shanxi province in 600 B.C. Legend has it that Jie saved his starving lord's life by serving a piece of his own leg. When the lord succeeded in becoming the ruler of a small principality, he invited his faithful follower to join him. However, Jie declined his invitation, preferring to lead a hermit's life with his mother in the mountains. Believing that he could force Jie out by burning the mountain, the lord ordered his men to set the forest on fire. To his consternation, Jie chose to remain where he was and was burnt to death. To commemorate Jie, the lord ordered all fires in every home to be put out on the anniversary of Jie's death. Thus began the "cold food feast", a day when no food could be cooked since no fire could be lit. The "cold food" festival occurs on the eve of Qing Ming and is often considered as part of the Qing Ming festival. As time passes, the Qing Ming festival replaced the "cold food" festival. Whatever practice is observed,the basic observation of Qing Ming is to remember one's elders by making a special effort to visit their graves, ashes or ancestral tablets. To make the visit even more meaningful, some time should be spent to remind the younger members of the family of the lives and contributions of their ancestors, and the story of Jie Zi Zhui who choose death over capitulation.

One of the key cities in the Yangtze River Delta, Suzhou is a renowned cultural, historic and tourist city. The city is located in the southeast of Jiangsu Province ,bordering Shanghai on the east, Zhejiang Province on the south, the Taihu Lake in the west and the Yangtze River in the north. Written historical records indicate that Suzhou has a history of over 4000 years, which entitles the city one of "24 Cultural and Historic Cities " approved as the first group of its kind by the State Council. For thousands of years Suzhou has been a cradle of talented people. In ancient times Suzhou gave birth to many remarkable politicians, philosophers, strategists, scientists and artists, represented by Sun Wu, Fan Zhongyan, Shen Kuo, Tang Ying, Gu Yanwu, Kuai Xiang. In modern times, prominent people from Suzhou emerge in large numbers in various fields. Suzhou's painting, calligraphy, seal cutting, opera, medicine and architecture all have different schools and achievements. Its traditional handicrafts such as embroidery and Taohuawu woodcut picture enjoy a high reputation at home and abroad.