buy 99.6% 75um alumina powder

This is peter from Lianyungang ZhongAo Aluminium CO.,LTD.
We are a very professional alumina ceramic factory in China.Now we want to
import much alumina powder.The specification is as follows:
Al2O3>99.6%  Na2O 0.1%-0.3%  Fe2O3<0.02% SiO2<0.018%
TiO2<0.006% Loss when burning<0.1% Density 3.95g/cm3
a-AL2O3>95%  Medium particle size 75um
Ultimate crystal size 2-3um 
BET specific surface area 0.6-0.8m2/g

Order quantity:1000ton/month

Please quote me the price CIF Lianyungang,the valid time of price,payment,sample
terms,delivery time and your supply quantity.

If your specification is not like above,please give me the related specification
and quote me a competitive price.

Also please tell me your website and related centification to me,Thx.