LPG gas empty bottles 12 kg

Request for information
Dear Concern,
We are from Bangladesh, please find my requirements and hope to get help from you.
(1)- We are looking for LPG gas bottling plant. //We are looking for 12kg LPG gas emty bottles. // We are also looking for LPG gas supplier.

(2)- We are interested to know more about Turkey and Turkish product.

(3)- We are also interested to know about importables items to Turkey from Bangladesh.
(4)- We are seeking investment in Bangladesh in small manufacturing