Spare parts cost is divided into new cost and repair cost. The new cost refers to the inventory, direct purchase, pre-production parts and infrastructure purchased spare parts costs. Spare parts restoration cost is composed of outsourced restoration cost and in-house restoration cost.
Materials cost consists of the cost of main materials, auxiliary materials, fats and oils and work tools.
Internal repair cost refers to the equipment department to undertake the maintenance tasks incurred by the labor costs, management fees, pieces of equipment costs, transportation costs and so on.
The outsourcing costs are composed of regular outsourcing, specialized outsourcing and special outsourcing costs.