• Type A: 10% of the total material export value accounted for 70% use/storage.• Type B: 20% of the total of 20% of the value of materials used/stored. • Type C: 70% of the total 10% of the value of materials used/stored. For category A small number but occupies large expenses needed tight control on: analysis of system construction, many suppliers, management by the highest levels of the company, the Department's material management. For type B: make buy according lot to limit the cost of management, search providers can offer many items and materials of this type. The number of times a year in the rotation of the materials is specified, for example as follows:• Class A materials Group: 4 times/year• Group B type materials: 2 times/year• Group C type materials: 1 time/year This method can be applied to classification by materials prices, the high-value materials need to be reviewed very carefully before putting into storage and the need to find solutions to extend your use of this material: for example, repairs for reuse. The combination of ABC and FSN the materials are viewed
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