We need to buy the following, all agriculture grade. Pls. send C&F Chittagong price. Pls. send details.

1. Magnesium Sulphate

A. Total Magnesium percent by weight Minimum 9.5 %
B. Sulphur (As SO4) Percent by weight minimum 12.5 %
C. Physical condition -- White Crystalline Powder

2. Zinc Sulphate (Heptahydrate)

A. Total zinc content 21 %
B. Water soluble zinc 95 %
C. Sulphur (as S04-s) 10.5 %
D. Magnesium (Mg) 1 % max
E. Copper (Cu) 0.1
F. PH not less than 4
G. Matter insoluble in water: 1 %
H. Moisture content (free water)

3. Chelated Zinc

A. Zinc Content Minimum 10 %
B. Moisture 7 %
C. Physical Condition: Pale Yellow amorphous
D. Ph not less than 5 %

4. Zinc Sulphate (Monohydrate granular grade)

A. Total zinc content 36 %
B. Water soluble zinc 95 %
C. Sulphur (as S04-s) 17.5 %
D. Magnesium (Mg) 1 % max
E. Copper (Cu) 0.1
F. PH not less than 4
G. Matter insoluble in water: 1 %
H. Moisture content (free water)