There are two types of pebbles: (natural) pebbles and (machined) quartz gravel.

As a silica processing factory, Gaoteng mainly provides machine-made pebbles. The products have low impurities and high density. The silicon content can reach more than 99% and the mechanical strength is about 8. It can be used for construction, pavement laying, garden art, etc. It is also used for ceramics, precision casting, Provide raw and auxiliary materials for papermaking, inkjet, chemical industry, monocrystalline silicon, national defense, etc.