Thailand is one of leading durian exporters. The most serious problem facing the
exporters has been the quality control of the exported durians. Maturity is the quality that is the
most important index in marketing. Every year there are some immature durians left mixing with
mature durians, as they are all exported. One of the reasons is that highly skilled workers are
needed for checking the maturity of durian. Very often there is a shortage of such skilled workers
around at the short period of exporting time. The inclusion of immature durians usually leads to
lower price and especially tarnishes the image of the particular exporter and durian exporting
industry as a whole.