We have engaged in stone roll making for many years and got a series of advanced manufacturing technics, which is superior to other factories in stone roll field. What’s more, we’ve got high-end equipment, perfect testing methods,strict quality checking system and a full range of services.
　　Our products have passed ISO 9001:2000
　　The performance index of our products
　　The surface of the stone roll:
　　Compression strength: 200kg/cm
　　Tensile strength:70kg/cm
　　Rigidity: the white, grey and dark grey crystals are above HV3500
　　Anti-acid ability: no change has been found after being put in 10% of H2SO4 solution and heated to 100oC
　　Anti-alkali ability: no change has been found after being put in 10% of H2SO4 solution and heated to 100oC
　　Water absorption: less than 0.72% when being put in the 50oC water

Compression strength (MPa)	200 MPa
Tensile strength (MPa)	70 MPa
Modulus of elasticity (E）	0.4 x 106 E
Rigidity (HV)	HV 3500

　　Approved by State Light Industry Bureau of China
　　Max. diameter  1500mm    Max. width 6000mm
　　Diameter 1500mm x 5500 horizontal lathe finishing natural stone roller
　　We research and make natural stone rolls which are super large in diameter and super wide in width which no other manufacturers in China can produce.
Digital Display Electromagnetic Resonance Heating Equipment has been used to our natural stone’s research and manufacturing technics mainly to tighten the nuts at both ends of the stone roll. We’ve combined our own technical expertise with that from Canada and Finland, so the stone rolls are stable and reliable. The stone roll line pressure can reach 200N/mm and make sure to meet the requirement of the modern, high speed, line pressure paper making machine.