Ceramic proppant is the key material in low-permeability fracturing of oil and gas wells' exploration. This product is used in t

Longstone International Trade Co., Ltd.,  located at Beijing, China. We have been manufacturing and supplying the highest quality and most dependable high pressure and economic sintered bauxite proppant for oil/gas field,

our on-time delivery and competitive pricing have made us integral partners in our customers' cost-reduction efforts.