6.4　Metallic Materials and Spare Parts

6.4.1　The period of storage should be 90 days for metallic materials and 180 days for special scarce materials or imported materials.

6.4.2　The period of storage should be 90 days for normal spare parts.

6.4.3　The period of storage should be 120 to 180 days for spare parts of domestic critical equipment.

6.4.4　Spare parts delivered together with the imported equipment shall be stored in a quantity specified in the contract.