White linen, high surface finish, corrosion-resistant acid, density, hardness, high iron content, non-radioactive, a gray background, and spread of gray linen, and the colors are more uniform, thus the white linen. 
 Shandong white hemp features: 
 1, the expansion and contraction 
 White linen heating and then cooling, the contraction can not be restored to its original volume, but will retain a part of the permanent expansion. 
 2, the freezing tolerance 
 To minus 20 degrees Celsius, the occurrence of freezing, expansive than the original volume of 1/10 of the pore water, rocks can not resist the power of such expansion, there will be a destructive phenomenon. General, if the water absorption less than 0.5%, do not consider the frost resistance. 
 3, the compressive strength 
 The compressive strength of the stone due to the mineral composition, the uniformity of the crystal thickness, the cementing material, loading area, loading the role of cleavage into the angle and other factors vary. Other things being equal, usually small crystalline particles bonded together with the dense material with high strength. 
 The development of enterprises, our success without your support. We will uphold the "quality first, reputation first" purpose, and sincerely look forward to working with you to establish a good working relationship and win-win development! 

 Welcome to visit our website: http://www.lzshiye.com