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:
- Total Zinc content by weight 0 % (Mini)
- Water soluble zinc of total zinc 0 % (Mini)
- Sulphur ( as SO4-S) content by weight 5 % (Mini)
- Magnesium (Mg) 0 % (Maxi)
- Copper (Cu) 1 % (maxi)
- PH not less than 4
- Matter insoluble in water by mass 0 % (Maxi)
- Moisture content (Free water) by weight (a) Crystalline 0 % (Maxi)
(b) Granular 5.0 % (Maxi)
- Particle size (In the granular product):- 90 % of the material shall pass
through 3-1mm BDS sieve.
- 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 :
- a) When heated to 70 – 100oC, hydro-extraction enables
changing to meta-boric acid
- b) When heated to 150 – 160oC, hydro-extraction enables
changing to pyroboric acid
- 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 :
- Total Zinc content by weight 0 % (Mini)
- Water soluble zinc of total zinc 0 % (Mini)
- Sulphur ( as SO4-S) content by weight 5 % (Mini)
- Magnesium (Mg) 0 % (Maxi)
- Copper (Cu) 1 % (maxi)
- PH not less than 4
- Matter insoluble in water by mass 0 % (Maxi)
- Moisture content (Free water) by weight (a) Crystalline 0 % (Maxi)
(b) Granular 5.0 % (Maxi)
- Particle size (In the granular product):- 90 % of the material shall pass
through 3-1mm BDS sieve.
- 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”.
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