Adopting high quality 'jinan Qing' natural material of granite,granite surface plate is manufactured by mechanical processing and manual polishing .The main mineral ingredients of granite are pyroxene,anorthose ,less olivine,black mica and less magnetite.Aging through hundreds of millions years,the granite can still retain even character,stable,high strength and hardness,and can keep high precision at heave duty.It is suitable for industrial production and measuring workers at laboratroy.
Hebei Quanyi Machinery Co., Ltd (Hebei True Plate Solutions Co.,Ltd)
Add.: No. 48 Ta'nan Road, Yuhua District, Shijiazhuang, Hebei, China