Do cheap quartz slabs have formaldehyde?

　　Quartz stone and artificial stone do not contain formaldehyde.

　　1. Artificial stone is non-toxic, radioactive, flame-retardant, non-sticky, non-seepage, antibacterial and anti-mildew, wear-resistant, impact-resistant, easy to maintain, seamless splicing, and versatile in shape.

　　2. High-quality quartz stone adopts selected natural quartz crystal minerals, and its SiO2 content exceeds 99.9%, and it is purified during the manufacturing process. The raw materials do not contain heavy metal impurities that cause radiation, 94% of quartz crystals and other Advanced resin additives make quartz stone free from the risk of radiation contamination. 　　Extended information:

　　Goldtop Quartz teaches you to pay attention to the following points when purchasing artificial stone

      1. Determine the color tone of the pattern.

　　Under the condition of sufficient light, place the selected slabs and the same batch of other marble slabs to be purchased on the ground at the same time, and stand 1.5m away from them for careful visual inspection. It is required that the patterns and tones of the same batch of marble plates should be basically coordinated.

　　2. Check for surface defects.

　　Under the condition of sufficient light, place the board flat on the ground, and stand at a distance of 1.5m from the marble board to observe the invisible defects and consider that there are no defects; whether there are cracks, sand holes, heterochromatic spots, stains and depressions on the surface of the board . At the same time, there must be no missing edges or corners on the front of the board; no obvious traces are allowed on the front after bonding and repairing, and the color should be close to the color of the front.

　　3. Check the mark.

　　The marking sequence of marble slabs is: naming, classification, specification size, grade, standard. The naming sequence of marble slabs is: the name of the place of origin of the block, the name of the characteristic color of the pattern, and marble (code-named M). Classification is based on the allowable deviation of the specification and size of the board, the allowable limit tolerance of flatness, the allowable limit tolerance of angle, appearance quality and specular gloss.