Newest Black Granite

With excellent quality ,punctual delivery and competitive price,we want to establish long term business relationship with you.

Our factory is at the foot of my quarry. We can product  tiles, slab, counter top,tombstone and so on.The quarry can product sandsaw block,counter top block.

                                              external exposure index (Tr) 0.033

                  specific radioactivity: internal exposure index (Tra)1.18

                  glassiness degree 105-120

                  alkali resistance 100%

                  acid resistance 99.87%

                  water absorbtion 0.08%

                  density 3.12g/cm2

                  shearing strength  427KG/cm2

                  anti-fold intensity 280KG/cm2 

    The granite: anti-press intensity 1290KG/cm2

the granite have 77% plaginclase,13%pyroxene,7-9%olivine,less than 1% biotite,1%magnetite,less than apatite.Because feldspar and pyroxene,olivine alternate with collocate.So have the oolitic texture pattern.

  The quarry have three hill.Nearly about 1000 meter.The quarry cover 0.75KM2.

This granite density 3.2 rigidity over 8.0 glossiness over 95.

Our company from North of China.Nearly Tianjin port.Our company have three quarries of black granite,No1-No3.specialized manufacturer black granite.Because it have gold hit so we named Black gold diamond.

Our company is specialized manufacturer black granite. We have three quarries and one factory.