Tibetan incense producers at work
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Tibetan incense producers stick to old traditions

Tonba Township in south-west Tibet is the hometown of incense production.

Among its 473 housholds, 239 can make Tibetan incense. Their annual income is more than $1.5m (£1m).

Watermills here are turning day and night to process the materials needed for Tibetan incense, which has a 1,300-year-old history.

Arif Shamim reports.