The culo'e puya battery comprises three drums made of lightweight wood from the tree known locally as lano or ceiba de lana (Ceiba pentandra, a member of the Bombacaceae family, to which Balsa also belongs).
Favorite nectar sources include the flowers of large trees such as Inga, Erythrina, and Ceiba or kapok.
The kapok tree is about 25 m high and was identified as an Important Bird Area (IBA) by BirdLife International because it supported a colony of Bourne's Herons.
At the time, Oei took over the firm, Kian Gwan's main activity was trade, especially trade in rubber, kapok, gambir, tapioca and coffee.
It also is infamous for kapok mattresses and pillows made from the ceibo seed case and is a good place to buy hammocks.
Cerf Island, 1.27 km², with a population of about 100, with three hotel-resorts (Cerf Island Marine Park Resort, Fairy Tern Chalets und L'Habitation), and restaurant Kapok Tree