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6. Inventories
 12 Months Ended
Dec. 31, 2017
Inventories Abstract  
Inventories

 The composition of inventories is as follows:

 

  2017   2016
  Cost   Provision
for losses		   Net balance   Cost   Provision
for losses		   Net balance
                       
Fuels, lubricants and greases 1,622,054   (3,074)   1,618,980   1,317,042   (2,851)   1,314,191
Finished goods 485,407   (18,495)   466,912   425,335   (19,801)   405,534
Work in process 1,637   -   1,637   2,011   -   2,011
Raw materials 492,029   (1,835)   490,194   246,974   (1,147)   245,827
Liquefied petroleum gas (LPG) 102,031   (5,761)   96,270   71,466   (5,761)   65,705
Consumable materials and other items for resale 160,024   (5,380)   154,644   138,610   (7,619)   130,991
Pharmaceutical, hygiene, and beauty products 415,956   (2,447)   413,509   352,187   (9,985)   342,202
Purchase for future delivery (1) 222,808   -   222,808   228,871   -   228,871
Properties for resale 27,032   (107)   26,925   25,982   (107)   25,875
                       
  3,528,978   (37,099)   3,491,879   2,808,478   (47,271)   2,761,207

 

(1) Refers to ethanol, biodiesel and advance of fuels.

 

Movements in the provision for losses are as follows:

 

  Balance on 12/31/2014     46,325  
  Additions to net realizable value adjustment     2,003  
  Reversals of obsolescence and other losses     (14,336)  
Balance on 12/31/2015 33,992  
Additions to net realizable value adjustment 12,393  
Additions of obsolescence and other losses 886  
Balance on 12/31/2016 47,271  
Reversals to net realizable value adjustment (6,713)  
Reversals of obsolescence and other losses (3,459)  
Balance on 12/31/2017 37,099  
             

 

The breakdown of provisions for losses related to inventories is shown in the table below:

 

  2017   2016
       
Net realizable value adjustment 19,817   26,530
Obsolescence and other losses 17,282   20,741
       
Total 37,099   47,271