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Quartz clock movement is a common movement variety of high-end watches on the market, many famous watches use quartz clock movement, after the quartz clock movement has been used for a period of time, it needs to be replaced, so that the clock can work better, the following is to introduce the replacement of the quartz clock movement, so that you can replace the quartz clock movement yourself. As a professional quartz alarm clock manufacturer, Lexinda will share some useful tips for you! 1. Before replacing the quartz clock movement, first remove the battery from the quartz clock. 2. Then use a Phillips screwdriver to remove the screw from the back of the quartz clock. Pay attention to the glass on the front of the quartz clock not to touch hard objects, it is best to put it on a clean table or soft cloth. 3. After unscrewing all the screws, the back cover of the quartz clock can be pried off with a word screwdriver. Be careful not to push too hard so as n

1. The humidity of 100% doesn't mean it's going to rain. Humidity is a physical quantity used to describe the amount of water vapor in the air. There are many ways to express air humidity, of which the most commonly used is the "relative humidity" in meteorology. So what is relative humidity? Let's think of air as a sponge. It can hold at most a certain amount of water, say 1 liter. Then the relative humidity refers to the ratio of the actual water content of the sponge (that is, absolute humidity) to the maximum amount of water that can be held. If the sponge does not drink water, the relative humidity is zero; if the sponge drinks 500 milliliters of water, the relative humidity is 50%. The maximum amount of water vapor the atmosphere can hold depends mainly on the temperature. A rise in temperature is equivalent to making the sponge bigger to hold more water. Therefore, when you increase the size of the sponge without adding more water, th

The humidity forecast is mostly relative humidity, such as 100% here. 100% means that 100% of the water vapor can be contained in the air. If water vapor enters the air, it will condense into water. The upper limit of how much water vapor can be contained in the air is affected by temperature. The higher the temperature, the faster the water vapor molecules move and the less likely they are to condense. The air can hold more water vapor without condensation. So water vapor of the same quality in the air is easy to condense in winter and not easy to condense in summer. This is why white fog can be blown out in winter but not in summer. The relative humidity shows how far the current water vapor content is from this upper limit. When the relative humidity is low, it means that the air is unsaturated and can absorb more water. At this time, the water is more likely to evaporate into steam. When the relative humidity is close to 100%, the air is about to be saturated. At

There are three kinds of temperature and humidity meters commonly used: 1.the electronic temperature and humidity meter determines the humidity according to the electrical conductivity of the humidity sensitive resistor or humidity sensitive capacitor at different humidity. 2. mercury or alcohol thermometer , the humidity is measured by a thermometer with double glass tubes, one of which has a volatilizer at the bottom, which should be provided with water during normal use to keep the evaporator moist. This kind of error is still very small, and the price is very cheap. 3. the dial thermometer works on the principle that two different metals have different degrees of expansion when the temperature changes. Generally speaking, the electronic one is more accurate than that of the dial. The electronic household temperature and humidity meters all use thermal resistors and humidity resistors. The household-level temperature and humidity meters have an ac

CE certification, which is limited to the basic safety requirements of products that do not endanger the safety of humans, animals and goods, rather than general quality requirements, the harmonized directive only stipulates the main requirements, which are standard tasks. Therefore, the accurate meaning is: the CE mark is a safety mark instead of a quality mark. It is the "main requirement" that forms the core of the European Directive. The "CE" mark is a safety certification mark and is regarded as a passport for manufacturers to open and enter the European market. CE stands for European Unification (CONFORMITE EUROPEENNE). The "CE" mark in the EU market is a mandatory certification mark . Whether it is a product produced by an enterprise within the EU or a product produced by another country, if it is to be circulated freely in the EU market, it must be affixed with the "CE" mark to indicate that the product It meets the basic r

FDA certification: The United States Food and Drug Administration is abbreviated as FDA . FDA is one of the executive agencies established by the US government in the Department of Health and Human Services (DHHS) and the Department of Public Health (PHS). As a scientific management agency, FDA's responsibility is to ensure the safety of food, cosmetics, drugs, biological agents, medical equipment, and radioactive products produced or imported in the United States. It is one of the earliest federal agencies whose main function is to protect consumers. The FDA manages medical devices through the Device and Radiation Health Center (CDRH), which oversees the production, packaging, and distributors of medical devices to comply with laws and conduct business activities. The range of medical devices is very wide, ranging from medical gloves to cardiac pacemakers, which are under the supervision of FDA. According to medical uses and possible harm to the human body, FDA classif

Are you still worrying about what to buy for your family or friends? Wine? That’s too expensive Shoes? But the moral is not good So here I would like to recommend a universal gift for giving options -- Wooden Clock Blind Box Amazing? And what is the blind box of wood clock? A creative wood clock with a good quality LED screen on the left side, And a surprise on the right side. What surprises are hidden in this blind box? It's Garage Kit! And it’s the pirate king style! Do you like Luffy, Zoro, Nami, Usopp, Sanji, Chopper, Robin, Franky, or Brook ？ This blind wooden clock box will give you a different experience The exquisite wooden clock blind box is very suitable for your family or friends as a gift. This kind of surprise and funny gift will make your family and friends love it. Not only to add features in your bedroom, but also to

Product prototyping helps businesses save on the costs associated with developing new products. Many large organisations have rapid prototyping centers that are dedicated to reducing the amount of time that it takes to bring a product from the design concept to reality. Technological progress has led to breakthroughs in precision machining and rapid tooling, which now enables companies to produce better product test results. According to Scott Welham of General Electric (GE),  rapid prototyping  and the business’ new rapid prototype centre in Kentucky have cut development and production times, as parts can be made much more quickly than before. Welham suggested that with rapid prototyping, GE has cut its product turn times by nearly 80%. While not every business has the means to build their own prototype centers, there are things that any business can do to improve design and prototyping times. 3D printing  – Businesses should use 3D printings and materials during th

Rapid prototyping  is a hot subject matter these days for manufacturing and design. The concept has gained attention for its potential for improving product innovation and cost cutting. Here are some of the advantages of rapid prototyping. Flexibility Rapid prototyping  can offer flexibility for the design and manufacturing stages. It gives organisations the ability to create solid physical objects by using freeform methods. Evaluation models and prototypes can be created quickly without mass-production commitment. Design improvement and testing Rapid prototyping  gives designers an opportunity to make improvements very early in the design stage. Designers can have a visual and physical understanding of the item earlier, test it at the design stage and make improvements accordingly. Product quality tends to be better as a result. Reduce uncertainty Rapid prototyping  can reduce uncertainties about product designs, as designers can access more information about

Fast brushless AC/DC roller door motor is an entirely new product manufactured by our company adapting to the demand from markets. NEWQILIN adhere to the human-oriented design concept in product reach and development. Making products on the installations and maintenance more convenient, faster and more reliable in use. It is the replacement product of traditional AC and brush DC electric rolling door motors. In the Brushless AC/DC roller shutter motor series, we have side motors and tubular motors for customer’s choice. About side motor, we have 80Nm, 120Nm, 300KG, 400KG, 600KG and 800KG for your choice. About tubular moto r , we have 200KG for your choice. Features of this kind of motor: 1. Easy to install, save the cost of installation and installation time. Can connect ground sensor, radar, infrared and remote-control device. It is the best option of garage door and all kinds of luxury doors. 2. Brushless motor not fever, can realize continuous op