Eyes generally good product appearance smooth, no burr peak, color and material imported high-quality PC material, good flame retardant, and some products although the surface is smooth, it seems to be coated with a layer of oil, but the color is pale, coarse texture, this The flame retardancy of the materials is not good, and the household appliances are buried with fire hazards.
The manual product panel is difficult to remove directly by hand. It must rely on certain special tools, and the general non-mainstream middle and low-end products are easy to take the cover by hand, resulting in indecent home and public places. When selecting, use the index finger and thumb to press the face cover diagonally to the end point. One end is pressed and held at the other end, and the other end is pressed hard. The face cover is loose and the product quality of sagging is poor, otherwise the quality is credible.
Listening by tapping on the switch function, the slimmer and smoother the sound of the skateboard, the better the rhythm and the quality; on the contrary, the sound is impure and dynamic when the door is opened and closed, and the sound of the intermittent state is of poor quality.
Look at structure 1. There are two kinds of switch structures that are more common at present: sliding plate type and pendulum bar type. The skateboard-type switch has strong sound and elegant and comfortable feel. The pendulum-type sound is crisp and has a slight metal impact sound. It is more stable than the traditional skateboard-type structure in the elimination of arc and the service life is mature. 2. The connection of the two-hole pressure plate is safer than the screw pressure line. Because the former increases the contact area between the wire and the electric device, it is resistant to oxidation, and is not prone to loosening or poor contact. The latter screw is likely to crush the wire when it is strong, and the contact area is small, which makes the electric part susceptible to oxidation and aging, resulting in poor contact. At present, good products use double-hole pressure plate connection.
Compared with the material selection switch, pure silver has the advantages of high conductivity, low heat generation, high safety performance, and the use of copper materials for the contacts is greatly compromised; the socket material is made of tin phosphor bronze and can be matched with the best strength, toughness, elasticity and other indicators. It is ten times longer than the general brass reed socket, and there is very little phenomenon that the strong arc burns the socket when the board is inserted; the gold-plated spring pin is extremely difficult to oxidize, the performance is stable, and the quality of the sound can be guaranteed to be clear and truthful. Fast and accurate.
Look at the logo currently on the market commonly used home switch rated current of 16A, socket current of 10A, air conditioning, water heater socket larger 16A, good product clearly identifies the available current intensity, and poor quality product logo is fuzzy, the data exaggerated It is not possible to determine if the rated current rating can be safely passed without full house smoke.
Recognizing brand name brand products through the strict test of time and market, is recognized as a safe product in the minds of consumers, regardless of material, quality are strictly controlled, packaging, transportation, display, image design, all aspects have high quality processes, brand-name electrician products It is not only a safety electrician functional product, but also an exquisite and elegant artwork that reflects the taste of elegant culture.
Nowadays it is an era of fashion. Although electrical appliances are not a kind of consumer goods for daily use, like the mobile phones, exquisite styles, designs of different styles, and originality are all designed to make life safer and more comfortable.
In fact, no matter from which aspect, I think that home purchase should use some famous brand products. These products are not only of good quality, novel style, and various specifications, but more importantly, they are safe and reliable.
I hope you will select the most desirable electrical products in the warm home decoration.
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A pipette, also known as a pipette gun, is a device used to quantitatively transfer liquids. When conducting research in analytical testing, a small or trace amount of liquid is generally removed with a pipette. Pipettes can be divided into gas piston pipettes (Air-displacement pipette) and external piston pipettes (Positive-displacement pipette) according to the principle. Gas piston pipettes are mainly used for standard pipetting, and external piston pipettes are mainly used to handle special liquids such as volatile, corrosive and viscous. Many people ignore the correct use of pipettes and some of the details.
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