Hello, we need CARBOXYLIC BUTADIENE-ACRYLONITRYTE LATEX (NBR LATEX). Executive standard: Q 320205GLFF01-2003 Solid content: 44±1% Viscosity (25°C): ⩽50mpa.S PH value (25°C): 7-9 Surface tension: 50±5mN m We need 30 tons per month Long partnership Cif China, need good price Waiting for you answer