The good quality laminate flooring has no odor, on the contrary there is a little wood flavor. The low-quality, low-quality flooring is the opposite. The base material has a strange smell, smokes a nose, and has an uncomfortable feeling. The density of a good floor substrate is very high and it is not easy to absorb water and dampen.
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Seeing: Observe whether the substrate is of high density, medium density or low density; whether the color is normal, whether the wood surface particles are fine, the wood surface particles are fine like a gray surface, and the substrate is washed; whether the wood grain is realistic or not. Good quality flooring is usually made of imported woodgrain paper with clear lines and looks very warm. The low-to-medium-sized floor is generally the base material of local small factories. The color is black, the grainy paper is not clear, and the lines are relatively vague.
Nose smell: Good quality laminate flooring does not smell bad, on the contrary there is a little woody flavor. The low-quality, low-quality flooring is the opposite. The base material has a strange smell, smokes a nose, and has an uncomfortable feeling.
Water test: The density of a good floor substrate is very high, and it is not easy to absorb water. The simplest test method is to pour clean water on the substrate of the floor. It will not absorb water and float on the substrate like water droplets. Low-quality, poor-quality flooring absorbs water, clear water disappears, and in use, it quickly expands, bubbles, and drums.
Trial seam: The floor with high density of base materials will not swell no matter how long it takes from the workshop to the warehouse, and there will be no difference in geometrical dimensions. The interface is smooth and smooth when assembled, and it looks like the entire panel. Up the floor.
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Brass is an alloy of copper and zinc, in proportions which can be varied to achieve varying mechanical and electrical properties. It is a substitutional alloy: atoms of the two constituents may replace each other within the same crystal structure.Brass is similar to bronze, which is another alloy containing copper, with tin instead of zinc;Both bronze and brass may contain small amounts of other elements, including arsenic, lead, phosphorus, aluminum, manganese, and silicon.Brass has long been a popular decorative material due to its bright golden appearance, due to many characteristics such as low melting point, machinability (for hand tools and modern turning and milling machines), durability, electrical and thermal conductivity, it is also widely used in a variety of utensils.It is still widely used in applications where corrosion resistance and low friction are required. Our ball valves are made of brass, which is hard and durable with long service life and high stability.Brass is typically composed of 66% copper and 34% zinc, making it a good alternative to copper-based jewelry as it shows greater resistance to corrosion.Brass is often used in important situations where sparks do not collide, such as near fittings and tools where flammable or explosive materials are used.
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