The quality of granite.

Granite is beautiful, durable and very hard. In ancient times, if there is a perfect mining, processing equipment and technology, it is certainly more popular than marble.

Granite often contains other minerals, such as hornblende and mica, and appears in a variety of colors, including: brown, green, red and the common black. Because it crystallizes so slowly, its crystals intertwine one by one like a Rubik's cube.

So it's hard. It is as durable as a house, does not fall off debris, is not easy to scratch, and is not afraid of high temperatures. Regardless of color or light, as long as there is some common sense of maintenance, it will not fade or darken. It is almost free from pollution, the surface gloss after polishing is very high, and impurities brought by various weather can hardly adhere.

Granite is generally mined by wire rope sawing. New processes such as dense row eye method and flame jet method have appeared. The stones mined by flame jet method are cut neatly, without dark injury, and have high production efficiency. After the stone is roughed up, it is called rough material, and then the block and sheet of the required size are made by manual drilling or machine sawing. Milling machine or rotary machine processing, into a cylindrical or curved body; Finally, manually cut coarse and fine rock lines, or grind and polish with machines to make the surface crystal bright. Granite does not pollute the environment. Synthetic materials are often associated with bad or even toxic by-products and will need to be replaced several times over the life of the building (each time with handling problems). Granite does not need replacing because it is very durable.

In addition, granite is very practical and can be made into a variety of surfaces - polishing, matte, fine grinding, fire, water knife treatment and sandblasting. Because granite often contains radioactive substances, when using granite, it is necessary to measure its radiation level and confirm its use.