What production capacity, automation level, and certification should be checked before buying an asphalt emulsion plant?

Buyers should match rated throughput to peak seasonal demand plus redundancy, and verify continuous versus batch capability for the grades they sell. Automation should include closed loop control of flow ratio, temperature, and pH, recipe management, alarms, and data logging for traceability. A built in lab or at least a defined QC workflow is critical for viscosity, residue, sieve, stability, and charge tests. Ask for evidence of compliance with relevant standards used in your market such as ASTM, AASHTO, EN, or local road specs, and verify electrical safety, CE or equivalent, and documented commissioning and training support.