>>> Links: Do not forget the appearance of switches, sockets, faucets
1 First look at the material.
Copper is the leading product of the faucet. Copper has functions of sterilization and disinfection. Generally imported products and domestic famous brands are made of copper. A good faucet should be cast as a whole, with a heavy weight, a sense of dignity, and a dull sound. If the sound is very brittle, it is made of stainless steel and the quality is worse than a grade.
2 see the surface finish.
High-quality faucets are machined with fine surface finishes, which are close to the mirror and without distortion. After the faucets have been molded and polished, the surface is plated with nickel and chromium (commonly known as "Crome"). The coating of the regular products has specific technical requirements, and through the neutral salt spray test, there is no rust phenomenon within the specified time limit. So when choosing, pay attention to the luster of the surface, hand touch without burr, no air hole, no oxidation spots. The electroplating layer should have a protective film (the resistance of the multimeter can be used to measure whether the electroplating layer is conductive, non-conductive is a protective layer), and the electroplating layer without protective film is easy to fade.
3 Followed by gently turning the handle to see if it is light and flexible, non-blocking stagnation, and a non-slippery faucet is better. Some very cheap products, the quality of the valve core, the technical coefficient can not meet the standard, and their price difference of 3 & 12316; 4 times. So do not set the price as the only standard when purchasing.
At present, most of the leading valve plugs on the market use steel ball valves and ceramic valves. Steel ball valve has a solid steel ball, strong resistance to pressure, but the disadvantage is that the rubber ring from the sealing effect is easy to wear, will soon be aging.
Ceramic valve itself has a good sealing performance, and the use of ceramic valve core faucet, feel more comfortable and smooth, can achieve a high degree of resistance to open the number of times. At present, the majority of taps are ceramic chips, which can be turned on and off quickly, solves the problem of leakage, and has a long service life. The national standard stipulates that it should be able to use 200,000 times, and some quality products have reached 50&12316; 600,000 times. Ceramic chip countries require the use of "nine-five" ceramics, that is, products containing more than 95% of aluminum oxide, the hardness of this standard is not enough.
4 Identify product tags.
General regular goods have manufacturer's brand identity in order to identify and prevent counterfeiting. However, some non-regular products or quality products are often only pasted with some paper labels, even without any marks.
Hardware to buy furniture brand water heater brand faucet switch socket stainless steel
Calcium Formate is white or slightly yellow powder or crystalline.It`s non-toxic, slightly bitter taste, insoluble in alcohol. Soluble in water. Aqueous solution was neutral.
As a new feed additive, it improves animal increasing speed. can promote piglets appetite and reduce diarrhea rate.Calcium formate in the form of neutral added to the feed, piglets after feeding by the digestive tract biochemical effects, will be free from a small amount of Formic Acid , so as to achieve the purpose of reducing the PH value of the gastrointestinal tract.Promote the growth of beneficial bacteria in the digestive tract, reducing the role of piglets under the disease.
For the construction of mortar and a variety of concrete, to speed up the cement hardening speed, shorten the setting time, especially in the winter construction, to avoid condensation at low temperatures.
Stripping fast, so that the strength of the cement as soon as possible put into use. But also widely used in high-grade leather manufacturing, and a variety of chemical products manufacturing.
Calcium Formate
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