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1. Before wearing medical goggles or masks, check whether there is any damage and whether the wearing device is loose.personal protective products ， It should be cleaned and disinfected after each use, preferably with alcohol.
2. Use both hands to wear goggles to adjust the comfort. Check that the goggles completely cover the eyes and are airtight.
3. When removing the goggles, you also need to disinfect your hands first, then pinch the side close to the head or ears to remove them, and put them in a recycling or medical waste container.
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E-liquid, also known as e-cigarette fluid, is an electronic vaping fluid used with e-cigarettes.
E-cigarette e-liquids are heated with an e-cigarette vaporizer, square box vape ，which can produce a mist like a cigarette.
The main components of e-liquid are food-grade or pharmaceutical-grade glycerin, propylene glycol and polyethylene glycol, as well as special tobacco flavors. Certain e-liquids also contain nicotine, mainly because they taste more like cigarettes.
The e-cigarette liquid does not burn, so no new harmful substances are produced, so e-cigarettes are healthier than traditional cigarettes.
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The high frequency of LED switching power supply is its development direction. The high frequency makes the switching power supply miniaturized and enables the switching power supply to enter a wider range of applications. led switching power supply ,So what should be paid attention to when choosing and using LED switching power supply?
1. The led switching power supply has a resistive load before leaving the factory. For capacitive or inductive loads, please specify in advance when ordering.
2. Sink and leakage current: When multiple power supplies are used, they share a ground point. The total leakage current is formed by the sum of the leakage currents of each cell. At this time, the reliability of the protective grounding wire should be checked and whether the grounding resistance meets the requirements to avoid electric shock.
3. In order to achieve the effect of sufficient heat dissipation, it is generally installed in a position with better air convection conditions or on the casing of the chassis, and the heat is dissipated through the casing.
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The drone performance perfectly combines art and technology, bringing a refreshing audio-visual enjoyment to the audience.
The drone light show is a brand-new means of expression, and the drone is just a technical means or performance element, indoor mini drone，and the creativity behind the performance is its soul.
How to combine drones with other performance elements, give full play to the potential and advantages of drone aerial performances, and maximize the shocking effect brought by them, these are the issues that need to be considered to create a wonderful drone performance. . What kind of surprises the drone will bring us in the future is more worthy of our expectation.
What scenarios are used in drone performances?
Opening, opening, anniversary, wedding, etc.; such as: scenic spots, cars, mobile phones, real estate, government public welfare, etc.
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Antistatic POM conductive classification: antistatic; static dissipative; conductive; electromagnetic shielding. Antistatic is to prevent the conductor from generating and accumulating static electricity. Anti Static Sheet ,When static charge builds up to a certain level, a voltage difference is created.
Anti-static POM materials are widely used. Anti-static POM is mainly used in: testing instruments, tool clips, anti-static boxes, anti-static workbenches, anti-static floors, high-precision fixtures for automation systems, etc.
Anti-static box
The POM anti-static box is mainly used for the turnover of some high-precision instruments and parts, and the container itself needs to be anti-static.
PCB loading and unloading rack
The POM anti-static PCB loading and unloading rack is mainly used for loading and unloading in the SMT workshop, and the product itself needs to be anti-static.
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Can POM material be anti-static?
How does PEEK conductive plastic perform today? Perfect performance. conductive plastic The widely used PEEK conductive plastic has been used in the aerospace industry to replace various aluminum and other metallic materials for the manufacture of various aircraft components.
In the automotive industry, PEEK resins have good friction and mechanical properties for making engines. The raw materials of covers, bearings, gaskets, seals, clutch rings and other various components are widely used in transmissions, brakes and air conditioning systems of automobiles.
PEEK resins are ideal electrical insulators. It can maintain good electrical insulation performance under harsh working conditions such as high temperature, high pressure and high humidity. Therefore, the field of electronic information has gradually become the second largest application field of PEEK resin.
As a semi-crystalline engineering plastic, PEEK is almost insoluble in all solvents except concentrated sulfuric acid, so it is also commonly used in the manufacture of compressor valves, piston rings, seals and various chemical pump bodies and valve parts.
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What are the characteristics of conductive PEEK plastic?
In recent years, smart electronic toys have entered the toy market, and their smart electronic plush toys have become the most popular toys at the moment! electronic plush ，So, why are smart electronic plush toys so popular, and what significance does it play for the growth of children?
1. Communicate with parents, parents can better understand the situation of children in all aspects, and make better guidance for cultivating children. Let your child choose what they like and communicate better with them.
2. Have a happy childhood, find a healthy place for children that is entertaining, can release pressure and like it, and can also use children's imagination and creativity to do what they want, and get happiness from it .
3. Combination of games and play. You can choose your favorite hobbies and science to better develop your personality.
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After the laser cutting machine is used for a period of time, the smoke will adhere to the surface of the lens, which will affect the engraving and cutting depth, and also affect the engraving and cutting accuracy. laser cutter online ，Generally, three mirrors and one focusing mirror are carefully wiped clean with anhydrous alcohol in about a week.
Metal laser cutting machine, fiber laser cutting machine and metal laser cutting machine are used for a period of time. The smoke and dust generated by engraving and cutting have a corrosive effect on the guide rail, so the guide rail should be regularly maintained.
During the installation and cleaning of the lens, any sticky matter, or even oil droplets printed on the nails, will increase the absorption rate of the lens and reduce the service life. Therefore, the following precautions must be taken:
Never install lenses with bare fingers. Finger cots or rubber gloves should be worn.
Do not use sharp instruments to avoid scratching the lens surface.
When taking the lens, do not touch the film layer, but hold the edge of the lens.
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Matters needing attention when using laser cutting machine
At present, due to the advantages of small size, high energy density, and insignificant memory effect, lithium-ion batteries are used in more and more electronic products.lipo safe bag However, lithium batteries also have shortcomings such as short cycle life, complex charging circuits, and high requirements for internal battery protection circuits.
If the lithium battery is used improperly, such as overheating shock, overcharge, overdischarge, short circuit and other abuses, chemical and electrochemical reactions will occur between the active substances inside the battery and the components of the electrolyte, resulting in a large amount of heat and gas. is generated. To a certain extent, it will cause the battery to catch fire and explode, and bring harm to people's property and life safety.
Currently, there is a lithium battery "fireproof bag". Fireproof bags are made of fireproof fabric. When the lithium battery accidentally burns or explodes during the charging process, it can effectively isolate the contact between the battery and the air to achieve the purpose of extinguishing the fire.
The new inner layer fire-proof and explosion-proof composite fiber cloth adopts soft copper foil glass fiber cloth with copper foil layer as the base layer or soft aluminum foil glass fiber cloth with aluminum foil layer as the base layer, which has high longitudinal and transverse tensile strength, air tightness, waterproof and sealing Good performance, flame retardant, high temperature resistance, good explosion-proof effect.
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