Price adjustment can be made once a year or varies with the economic condition as from the latest price adjustment has executed, which the Appointer shall notify in writing the Distributor in advance no less than thirty (30) days, except for in case of the force majeure, for examples, severe inflation, the hike of material cost or the shortage of raw materials, the significant difference in money currency. In this case, price adjustment is allowed when the incident occurs and Appointer shall notify in writing the Distributor in advance no less than thirty (30) days as well.