Dear Sir,

Authorization Latter Sample – We, Autogarment Company Ltd., Address: Rm6001, No.1, Green Land Technology Square, Lane 58, East Xinjian Road, Shanghai, China hereby agree to authorize M/s Auto Agriscience Limited, Marketing Agent and also submit our file for the products of Zinc Sulphate (Hepta) Fertilizer to register in Bangladesh. We have confirmed that we are the basic manufacturer of the above products in china. We also authorize your company to complete all the necessary formalities regarding Registration of the above mentioned product with the Field Service Wing, Department of Agricultural Extension of Bangladesh, Khamarbari, Farmgate, Dhaka-1215, and Compliance Bangladesh.

Sincerely Yours,

For, Autogarment Company Ltd.,

Authorized Signature

SPECIFICATION Authorization Latter Sample

Fertilizer Name: Zinc Sulphate (Hepta)

Specification:

  1. Total Zinc content by weight                                  0 % (Mini)
  2. Water soluble zinc of total zinc                              0 % (Mini)
  3. Sulphur ( as SO4-S) content by weight                   5 % (Mini)
  4. Magnesium (Mg) 0 % (Maxi)
  5. Copper (Cu) 1 % (maxi)
  6. PH not less than 4
  7. Matter insoluble in water by mass 0 % (Maxi)
  8. Moisture content (Free water) by weight (a) Crystalline 0 % (Maxi)

(b) Granular     5.0 % (Maxi)

  1. Particle size (In the granular product):- 90 % of the material shall pass

through 3-1mm BDS sieve.

  1. Physical condition Granular free flowing / Crystalline

Country of Origin: China

For, Autogarment Company Ltd.,

Authorized Signature

MANUFACTURE GURANTED ANALYSIS CERTIFICATE

We, Autogarment Company Ltd., as the manufacture, hereby by certify that “the product of boric acid fertilizer does not contain toxic wastes and the level of heavy metals present is not hazardous for human health, crop and environment”.

For, Autogarment Company Ltd.,

Authorized Signature

TECHNICAL LETERATURE

Major composition                : Zinc  Sulphate (Hepta)

Appearance                           : Granular Free Flowing / Crystalline

Characteristics                       : Feels greasy, Odorless and tasteless.

Purity                                                 : 99.90%

Solubility                                : Soluble in water, alcohol, glycerol ether and volatile oil.

Chemical Properties              :           Normal Sulphate Low Sulphate

Purity: 99.90% min 99.90% min
B2O3:56.25% min 56.25% min
SO4:500 ppm max 130 ppm max

Physical Properties                :           Crystalline

Molecular Weight:61,83 61,83
Specific Gravity:1,435 gr/cm3 1,435 gr/cm3
Bulk Density: 0,8 gr/cm3 0,8 gr /cm
Fractions +1 mm 4%max +1 mm 4%max
-0,060 mm 4% max -0,060 mm 5% max

Stability                                  :

  1. a) When heated to 70 – 100oC, hydro-extraction enables

changing to meta-boric acid

  1.  b) When heated to 150 – 160oC, hydro-extraction enables

changing to pyroboric acid

  1. c) When heated to 300oC, hydro-extraction enables

changing to boric anhydride

Standard                                : GB-53890 (People’s Republic of China standard

Use                                          : It can be used as fertilizer, top application, split application

`             and as a raw material for manufacture of micro nutrient. It

can be used all type of field crops.

Packing                                  : In woven polypropylene lined with poly ethylene film bags

of 25 kg (+/- 0.5 kg) net each.

Specification                          :

  1. Total Zinc content by weight                         0 % (Mini)
  2. Water soluble zinc of total zinc                                 0 % (Mini)
  3. Sulphur ( as SO4-S) content by weight                      5 % (Mini)
  4. Magnesium (Mg) 0 % (Maxi)
  5. Copper (Cu) 1 % (maxi)
  6. PH not less than 4
  7. Matter insoluble in water by mass 0 % (Maxi)
  8. Moisture content (Free water) by weight (a) Crystalline 0 % (Maxi)

(b) Granular     5.0 % (Maxi)

  1. Particle size (In the granular product):- 90 % of the material shall pass

through 3-1mm BDS sieve.

  1. Physical condition Granular free flowing / Crystalline

Declaration                            : The manufacturers guaranteed analysis shall indicate that “the product does not contain toxic wastes and the level of heavy metals present is not hazardous for human health, crop and environment”.