... water shutoff profile system price with Shandong Tongli Chemical Co.,Ltd,Website:http://www.tlpam.com, which is one of the ... dosage: πQ = ────── Dhψ 4Where: Q──── blocking dosage, m;D──── sealing diameter, m;h──── reservoir thickness, m;ψ──── porosity,%.General formation by 7 to 10 per ...