Recently, Mr. Zhang came to the Yuhuatai District Consumer Association for help, saying that when he bought a bathtub in a furniture store two days ago, he chose a wooden tub bathtub. The store called it a solid wood bathtub, which is absolutely environmentally friendly. The solid wood bathtub is cheap, environmentally friendly, and the style is also satisfactory. Mr. Zhang just prepared to pay for it and asked the store clerk to indicate that the bathtub material is "pure solid wood" on the sales order. The store refused to write and said that he would not do Mr. Zhang. Business. Mr. Zhang suspected that this wooden barrel was not made of solid wood, but made of plywood.
After receiving the complaint, the staff of Yuhuatai District Consumers Association came to the store with Mr. Zhang. The store explained that this wooden barrel is indeed a solid wood barrel, but it is not a pure solid wood, but a solid wood composite material. Mr. Zhang has higher requirements. Note that the material is pure solid wood, of course, you can not write. After inspection, it was confirmed that the barrel material is solid wood composite material.
Afterwards, the staff of the Yuhuatai District Consumers Association conducted critical education on the store and pointed out that it should provide truthful product information when promoting products to consumers in accordance with the principle of honesty and trustworthiness. The store also apologized to Mr. Zhang.
Consumers pointed out that solid wood furniture has been favored by consumers in recent years because of its environmental performance. However, the concept of solid wood furniture has been confusing. In recent years, the problem of the "unrealistic" quality of solid wood furniture has become the focus of furniture consumer complaints. What kind of products belong to solid wood furniture? Consumer survey found that most consumers think that solid wood furniture is 'all solid wood furniture', and some believe that 'combination of wood and board furniture' is also considered solid wood furniture. In addition, some people think that the "no glue" is solid wood furniture according to the process, and the main material is solid wood.
At the same time, some sellers also use consumers' vague understanding of solid wood furniture. On the one hand, they claim that their furniture is solid wood furniture, but on the other hand, they do not indicate that the products they sell are made of solid wood. In order to cater to consumer psychology, furniture sales staff deliberately confuse concepts. Some refer to 'solid wood veneer furniture' as 'solid wood furniture', some refer to 'board-wood combined furniture' as 'solid wood furniture', and some even point out with certainty that the solid wood content reaches a certain percentage is solid wood Furniture.
The staff of the Consumers ’Association stated that as early as May 1, 2009, after the implementation of the new version of the" General Technical Conditions for Wooden Furniture "standard, the concepts of" solid wood furniture "and" integrated wood furniture "that were easily confused were strictly clarified. The definitions of "all solid wood furniture", "solid wood furniture" and "solid wood veneer furniture" under the category of "solid wood furniture" have also been specifically defined. The so-called "solid wood" theory of businessmen is really untenable.
Magnetostrictive level sensor is composed of three parts: probe rod, circuit unit and float. To measure, the circuit unit generates pulses of current that travel down the magnetostrictive line and generate a circular magnetic field. A float is arranged outside the probe rod, and the float moves up and down along the probe rod with the change of liquid level. The float generates a magnetic field at the same time because it is fitted with a set of permanent magnets. When the current magnetic field meets the float magnetic field, it produces a "twisting" or "return" pulse. The time difference between the "return" pulse and the current pulse is converted into pulse signals to calculate the actual position of the float and measure the liquid level.
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