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Professionals who have done BGA infrared rework station work know that "warming up" is the prerequisite for successful rework. PCB processing at high temperature (315-426°C) for a long time will bring many potential problems. Thermal damage, such as pad and lead warping, substrate delamination, white spots or blistering, and discoloration. The "invisible" damage to PCB caused by high temperature is even more serious than the problems listed above.

Looking for the ultimate industrial chromatography solution? Introducing the ACC® Industrial Chromatography Column from Hanbon - the cutting-edge system that streamlines your separation processes like never before. Trust us, you won't want to miss out on this game-changing technology. Click now to learn more!

ACC® automatic axial compression chromatography columns can ensure consistent filling results each time, and the chromatographic results can be repeated, reducing the risks caused by large differences between batches in the production process. ACC® series of automatic chromatographic columns are suitable for most types of chromatographic fillers and corresponding column loading methods in the biopharmaceutical industry, and meet the production requirements of diversified products.

Throttle cleaning notice Throttle if removed for cleaning will be disconnected, resulting in the loss of data information with the car computer. So after cleaning, it must be matched with the car computer to establish information communication, otherwise, it may cause engine-related fault lights on, starting difficulties, idle speed instability, and other failures.

A pseudovirus is a laboratory-created viral particle that mimics the structure of a real virus but lacks the ability to replicate and cause infection. Pseudoviruses are formed by encapsulating specific nucleic acid fragments within a viral capsid protein. Currently, the pseudoviruses launched by Hanbio Biotechnology are mainly lentivirus, adenovirus and adeno-associated virus. The quality of products is strictly controlled to ensure the stability between batches. Pseudoviruses are mainly used as positive control standard and internal control standard in viral nucleic acid test kits.

Industrial Rotary Screw Air Compressor is a machine designed based on the screw air compressor working principle of volume changes caused by the rotation of twin screws (also known as Yin and Yang rotors). The industrial screw type air compressor can intake natural air and complete the work through several internal processes, eventually discharging compressed air that meets the pressure requirements. This machine is referred to as an industrial screw air compressor.

A pet screen is a type of screen designed to be more durable and resistant to damage caused by pets, such as cats and dogs. These screens are typically used in windows, doors, and screened-in porches to prevent pets from tearing or damaging the mesh.

Hemorrhoids is a recurring disease. The disease can cause perianal pain and blood in the stool, which is a great harm to the health of the patient. For the treatment of hemorrhoids, most patients will choose medication, but some patients are seriously ill and can only choose surgery for treatment. So what are the steps of hemorrhoid ligation surgery?

1. The role of sf6 gas density meter and density relay The so-called density refers to the mass per unit volume of a specific substance under specific conditions. The SF6 pressure gas in the SF6 circuit breaker is sealed in a fixed container. It has a certain density value under the rated pressure at 20℃. Within the range of various allowable conditions for the operation of the circuit breaker, although the pressure of SF6 gas changes with temperature, the density value of SF6 gas is always the same. Because the insulation and arc extinguishing performance of SF6 circuit breakers depends to a large extent on the purity and density of SF6 gas, the detection and density monitoring of SF6 gas purity is particularly important. If an ordinary pressure gauge is used to monitor the leakage of SF6 gas, it will be difficult to distinguish whether the pressure change of SF6 gas is caused by the actual leakage or the change of the ambient temperature. In order to achieve the purpose of frequent monitoring of density, SF6 circuit breakers should be equipped with SF6 gas density meters or density relays. The SF6 gas density gauge meter is for monitoring, and the density relay is for control and protection.

TBHQ is a highly effective preservative for unsaturated vegetable oils and many edible animal fats. It does not cause discoloration even in the presence of iron, and does not change flavor or odor of the material to which it is added. It can be combined with other preservatives such as butylated hydroxyanisole (BHA). As food additive, its E number is E319, where it is used as a preservative. It is added to a wide range of foods, with highest limit (1000 mg/kg) permitted for frozen fish and fish products. Its primary advantage is enhancing storage life.

The waste evaporates, sublimates and organic waste is decomposed by microorganisms to release harmful gases to pollute the atmosphere; The fine particles and powders in the waste drift with the wind and diffuse into the air, causing dust pollution of the atmosphere; In the process of waste transportation, storage, utilization, treatment and disposal, harmful gases and dust are produced.

What are the Differences between conventional fire alarms and addressable fire alarm systems? In today's world, fire alarm systems have become a staple in public places due to the increased risk of fire outbreaks in modern buildings. Fire outbreaks caused by faulty electrical appliances, gas explosions, and car accidents are now prevalent in many places. Fortunately, conventional fire alarm systems offer a reliable solution to this problem. The solution includes early fire detection and response. So if you want to install a fire alarm system in your building, we must discuss some key differences between conventional fire alarms and addressable fire alarm systems.

CNC turning & milling Shows Outstanding Advantages Mill composite machine can shorten the product manufacturing process and improve production efficiency. The cnc machining milling turning can realize all or most of the machining processes in one loading, which can greatly shorten the manufacturing process. On one hand, the production auxiliary time caused by the loading change is reduced, and at the same time, the manufacturing cycle and waiting time of the tooling and fixture are also reduced, which can significantly improve the production efficiency.