Dear sir,
We are Minh Hang I&T Co.,Ltd.- one of the biggest companies in Viet Nam dealing in Rotundin.
This is COA of my Rotundin :


Certificate of analysis.

Requirements Results
1. Specification: meet to requirement Complies
2. Absortion: 150-160 Complies ( 150.8)
3. Melting point: +1410C - +144 0C Complies ( +1420C)
4. Specific optical rotation: - 2990 to - 3000 Complies
5. Description: Meet to requirement Complies
6. Moisture: Not more than 5% Complies ( 4.34%)
7. Limpidity and colour: Meet to requirement Complies
8. Density: Not less than 98 % of Rotundin caculated on the dried basic Complies( 94.74% -99.04%)


Hope that we can have good business relationship in the very near future.
Thank you very much and look forward to hearing from you soon.
Yours faithfully