Bangladesh's booming leather industry brought in more than $460 million in revenue last year.
But the human cost is also high, with many workers suffer from diseases related to exposure to the fumes of a toxic chemical called Chromium.
Chromium is banned in most countries because of its devastating effects on the human body, including causing cancer.
Al Jazeera's Nicolas Haque reports from the tanneries in the capital, Dhaka.
Source: Al Jazeera