High Purity Alumina (HPA) – 4N (99.99%) and 5N (99.999%)

We are seeking industrial-scale supply with guaranteed high purity and consistent quality. Our buyer is based in China

A. Specifications
HPA 4N (99.99%)
Element / Compound Specification (Weight %)
Aluminum Oxide (Al₂O₃) ≥ 99.99%
Silicon (Si) Max. 0.005%
Iron (Fe) Max. 0.001%
Sodium (Na) Max. 0.001%
Magnesium (Mg) Max. 0.001%
Calcium (Ca) Max. 0.001%
Titanium (Ti) Max. 0.001%
Others Max. 0.002%


HPA 5N (99.999%)
Element / Compound Specification (Weight %)
Aluminum Oxide (Al₂O₃) ≥ 99.999%
Silicon (Si) Max. 0.0005%
Iron (Fe) Max. 0.0005%
Sodium (Na) Max. 0.0005%
Magnesium (Mg) Max. 0.0005%
Calcium (Ca) Max. 0.0005%
Titanium (Ti) Max. 0.0005%
Others Max. 0.0005%

Supply Requirements
• Trial Order: 50,000 MT
• Annual Contract: 100,000 MT (12-month delivery schedule)
• CIF delivery to Dalian, Yangshan, or Lianyungang ports
• Preferred shipment schedule: first batch before end of December 2025
• Supplier must provide Certificate of Analysis (CoA), MSDS, and product datasheets
• Product purity and quality must be verifiable by CoA and independent testing

Should you require any additional information or documentation from our side, please do not hesitate to contact me directly.

We look forward to your positive response and the opportunity to collaborate.

Best regards,