7. Short-term investments (Tables)

12 Months Ended

Dec. 31, 2019

Short term investment [absract]

Schedule of short-term investments

	Weighted Average Rate (p.a.)	2019	2018
Local Currency
Government Bonds	104.2% of CDI	56,532	21,100
Investment Funds	100.2% of CDI	862,868	365,249
Total Local Currency		919,400	386,349
Foreign Currency
Deposits with Banks	3.0%	1,713	92,015
Government Bonds	1.8%	29,684	-
Investment Funds	-	2,965	-
Total Foreign Currency		34,362	92,015
Total		953,762	478,364