Dear Bundit: 1. Please updating me the test result of some sealers ( top coat ). 2. Please survey the new acid zinc additives ( Hao Chi ), samples are available from Sui.Compare with the current Hao Chi products. Checking points:a. Physical properties: such as cloudy point, mixing with water or solvent, brighteners blending with carrier….pH, density.b. Hull Cell performance, normal conditions and designed some critical conditions to compare.c. Consumptions, by small pilot testing. I wish to have a good report for this subject within one week.