Note 9 Operating Segments &amp; Geographic presence Although each subsidiary of Petrogress is responsible for its own affairs, Petrogress manages the operations in these subsidiaries and affiliates. The operations are grouped into three business segments, Upstream, Midstream and Downstream, representing the companys operating segments as described in Item 1, Business Overview. The companys primary country of operation is Greece -its head operating location- while other of the companys operations are in Ghana and Cyprus. Most of our marketing, sales, ship-management and other related functions are performed at our main office in Piraeus, Greece. We also market products and services through our offices in Ghana, Cyprus and our representations or agents. The company evaluate the performance of its operating earnings based on its majors subsidiaries and goods sales. (a) Earnings by major operating subsidiaries and their trading areas are presented in the following table: Year Ended December 31, Operating Subsidiaries (1) 2019 2018  Petrogress Intl LLC. (Internationally) $ 15,344,924 $ 8,650,462  Petronav Carriers LLC. (Internationally) 989,313 2,737,600  Petrogress Africa Co. Ltd. ( Nationally Ghana ) 936,000 479,000  Petrogress (Hellas) Co. (Internationally) 109,500 57,838 Totals $ 17,379,737 $ 11,924,900 (b) Earnings by products and other services are presented in the following table: Year Ended December 31, Sales volumes per product &amp; service (2) 2019 2018  Crude oil $ 13,983,090 $ 7,558,463  Gas oil 2,136,000 1,518,500  Lubricants 90,834 -  Vessels hires &amp; freights 989,313 2,257,600  Others 180,500 590,338 Totals $ 17,379,737 $ 11,924,901 ( 1 ) Amounts of revenue transactions before intercompany eliminations ( 2 ) Amounts of products transferred before intercompany eliminations Segment Information; Petrogress chief operating decision maker is the chief executive officer (CEO) of its general partner. The CEO reviews Petrogress discrete financial information, makes operating decisions, assesses financial performance and allocates resources on a type of service basis. Petrogress has two reportable segments: Commodities and Other (C&amp;O) revenues and Hires &amp; Freights (H&amp;F). Each of these segments is organized and managed based upon the nature of the products and services it offers.  C &amp; O  stores, distributed and markets crude oil, Gas Oil, and refined petroleum products. Also includes retailing sales of its gas stations and rest areas, terminals, and refined logistics.  H &amp; F  marine transportations, transports, and marine service. The tables below present information about revenues and other income, capital expenditures in unconsolidated affiliates for the years ended December 31, 2019 and 2018: Year Ended December 31, C&amp;O (Commodities &amp; Other Revenues) 2019 2018 Revenues from crude oil sales $ 15,399,090 $ 8,982,462 Other Revenues 20,630 7,500 Total Revenues 15,419,720 8,989,962 Segment Adjusted EBITDA (3,145,868 ) 323,367 Net income/ (loss) attributable to: Shareholders of the Company (3,112,862 ) 305,788 Non-controlling interests (33,007 ) 17,579 F&amp;H (Freights &amp; Hires Revenues) Revenues from freights &amp; hires $ 541,500 $ 37,000 Total Revenues 541,500 37,000 Segment Adjusted EBITDA 361,187 1,331 Net income/ (loss) attributable to: Shareholders of the Company 362,347 1,259 Non-controlling interests (1,159 ) 72 Year Ended December 31, Disaggregation of Revenues 2019 2018 Revenues commodities sales $ 15,399,090 $ 8,982,462 Revenues from freights &amp; hires 541,500 37,000 Other Revenues 20,630 7,500 Total Revenues 15,961,220 9,026,962 Accounts Receivable, net; The amount shown as accounts receivables, net at each balance sheet date includes estimated recoveries from customers and charterers for sales of oil products, hires, freight and demurrage billings, net of allowance for doubtful accounts. Accounts receivable involve risk, including the credit risk of non-payment by the customer. Accounts receivable are considered past due based on contractual and invoice terms. An estimate is made of the allowance for doubtful accounts based on a review of all outstanding amounts at each period, and an allowance is made for any accounts which management believes are not recoverable. The determination of bad debt allowances constitutes a significant estimate. The table below sets forth Accounts Receivable, net of the Company for the years ended December 31, 2019 and December 31, 2018: Year Ended December 31, Receivables 2019 2018 Receivables from commodities and hires sales $ 2,085,838 $ 5,092,860 Less: Provision for doubtful accounts (130,550 ) (344,466 ) Sales receivable net 1,955,288 4,748,394 Other receivables 56,142 31,038 Accounts receivable, net $ 2,011,430 $ 4,779,432 As of December 31, 2019, and 2018, the Company recognized a provision for doubtful accounts of $130,550 and $344,466 respectively, for trade receivables from specific customers that were deemed doubtful as to their recoverability. This provision is presented in its designated line in the Consolidated Statements of Comprehensive Income depicted herein. No accounts receivable balances were written-off for the years ended December 31, 2019 and 2018. Accounts payable and Accrued Expenses; Accounts payable and accrued expenses consisted of the following items for the years ended December 31, 2019 and 2018 respectively: Year Ended December 31, Accounts payable and Accrued Expenses 2019 2018 Service providers $ 439,448 $ 664,344 Wages and Bonuses 874,470 60,351 Oil Suppliers 38,307 501,536 Vendors and Suppliers 49,973 39,221 Totals $ 1,402,198 $ 1,265,452