... medium density, high density.By specification: 6-12 mesh, 8-16 mesh, 12- ... to, the manufacturing process, the quality control, and the product performance. 6 producion lines provide an ... Proppant provides committed, exceptional services to customers with continuous product development. ... to leave us an enquiry to us. We will reply you as soon as possible. Also we will provide 7*24 hours service online ...