A few good ways to teach you to buy sanitary ware

At present, the brand names of sanitary ware on the market: popular or well-known brands, can be divided into three categories:
Selling art: Laufen, Duravit, the price is not expensive.
Selling brands: TOTO, Kohler, Lejia, American Standard, and Hecheng, the price is affordable for families in general.
Sales of brands and products: Kyrgyzstan, Faenza, Wrigley and other brands, more affordable kind.
First, toilets. You should pay attention to the flushing method and water consumption when you purchase the toilet bowl. Toilet flushing methods are common straight and siphon. In general, flush toilets are loud and easy to counteract. The siphonic toilet seat is a silent toilet seat with a high water seal and is not likely to be anti-odor.
Second, bathtubs. Bathtubs are made of ordinary steel bathtubs, acrylic bathtubs, cast iron bathtubs, and 3.5mm thick steel bathtubs. In general, the ordinary steel bathtub is easy to clean, and the shape is relatively simple. The acrylic bathtub is rich in shape, but its life is short and it is difficult to clean after aging. The cast iron bathtub has long service life, high grade, high price, and handling and installation are more troublesome. Now more popular in the international market is Germany 3.5mm thick steel plate bathtub, because this type of bath surface glazed handle is not dirty, thick steel plate long life, easy installation, both the advantages of steel bathtub and cast iron bathtub.
Third, basins. In addition to the shape of the basin, consumers should pay attention to the quality of the glaze, because the glazed surface is good, not hanging dirty, the surface is easy to clean, long-term use is still bright as new. When selecting, you can look at the light and observe it from the side of the ceramic. Good glaze should have no stains, pinholes, trachoma and bubbles, and the surface is very smooth.
1. Products with high finish, pure color, not easy to hang dirt, easy to clean, good self-cleaning. When judging, it is advisable to carefully observe the reflection of the product surface from the side under strong light, so that there is no fine blisters and pits on the surface, or that there is little trachoma and pitting. The products with high brightness index adopt high-quality glazed materials and very good glazing techniques, and have good reflectivity and uniformity of light, so that the visual effect is good and the product quality is high.
2, choose to use the hand gently touch the surface, I feel very flat and delicate as well. You can also touch the back and feel the fine feeling of "sanding".
3, you can also tap the ceramic surface by hand, generally a good ceramic material is knocked out sound is relatively crisp.
Fourth, leading class. When choosing a faucet, pay attention to the quality of the faucet valve, the quality of the faucet, the quality of the faucet, and the quality of the surface treatment. It also depends on its adaptability to water quality and whether it is water-saving. General high-quality taps are imported ceramic valve cores, with Italy and Germany preferred. In manufacturing materials, most high-end faucets are made of brass. In addition, when purchasing a faucet, the manufacturer must be required to provide quality assurance for the surface coating, and the warranty period should not be less than three years.
Tip: The coating on the surface of the regular product does not leave a fingerprint after the finger is pressed. At the same time, there is a relatively simple method of identification: the amount of weight is generally better.

Buying skills experience Lejia

Tunnel Ring

Tunnel lining with segmental rings behind TBMs are reinforced concrete elements and must be calculated and designed according to the standards of reinforced concrete constructions. In tunnelling, however, specific circumstances must be taken in account, which make design much more complicated: The determination of loads during ring erection, advance of the TBM, earth pressure and bedding of the articulated ring, is difficult. The ring model and the design input values must be studied carefully according to the parameters of the surrounding soil.

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