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Segment Reporting (Tables) | 12 Months Ended
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Dec. 31, 2018
Segment Reporting [Abstract] |
Summary of information by segment |
|  | For the year ended December 31, 2018 |
|  | Machinery and Equipment sales |  |  | Construction materials sales |  |  | Municipal construction projects |  |  | Technological consulting and other services |  |  | Total |
Revenues |  | $ | 17,453,324 |  |  | $ | 18,805,539 |  |  | $ | 720,191 |  |  | $ | 590,808 |  |  | $ | 37,569,862 |
Cost of goods sold |  |  | 8,050,742 |  |  |  | 11,600,016 |  |  |  | 537,076 |  |  |  | 180,505 |  |  |  | 20,368,339 |
Gross profit |  |  | 9,402,582 |  |  |  | 7,205,523 |  |  |  | 183,115 |  |  |  | 410,303 |  |  |  | 17,201,523 |
Interest expense and charges |  |  | 478,515 |  |  |  | 583,123 |  |  |  | 329 |  |  |  | 3,320 |  |  |  | 1,065,287 |
Depreciation and amortization |  |  | 212,819 |  |  |  | 1,508,016 |  |  |  | 13,420 |  |  |  | - |  |  |  | 1,734,255 |
Capital expenditures |  |  | 242,077 |  |  |  | 9,033,608 |  |  |  | - |  |  |  | - |  |  |  | 9,275,685 |
Income tax expenses |  |  | 294,283 |  |  |  | 1,283,697 |  |  |  | 1,675 |  |  |  | 800 |  |  |  | 1,580,455 |
Segment profit (loss) |  |  | 2,687,222 |  |  |  | 3,613,721 |  |  |  | (68,077 | ) |  |  | (1,665,184 | ) |  |  | 4,567,682 |
Segment assets as of December 31, 2018 |  | $ | 21,156,682 |  |  | $ | 59,083,126 |  |  | $ | 716,909 |  |  | $ | 893,878 |  |  | $ | 81,850,595 |
|  | For the year ended December 31, 2017 |
|  | Machinery and Equipment sales |  |  | Construction materials sales |  |  | Municipal construction projects |  |  | Technological consulting and other services |  |  | Total |
Revenues |  | $ | 14,484,853 |  |  | $ | 19,455,800 |  |  | $ | 250,422 |  |  | $ | 1,359,941 |  |  | $ | 35,551,016 |
Cost of goods sold |  |  | 6,735,906 |  |  |  | 10,368,972 |  |  |  | 160,324 |  |  |  | 432,084 |  |  |  | 17,697,286 |
Gross profit |  |  | 7,748,947 |  |  |  | 9,086,828 |  |  |  | 90,098 |  |  |  | 927,857 |  |  |  | 17,853,730 |
Interest expense and charges |  |  | 410,214 |  |  |  | 601,141 |  |  |  | 370 |  |  |  | 1,235 |  |  |  | 1,012,960 |
Depreciation and amortization |  |  | 207,651 |  |  |  | 1,359,088 |  |  |  | - |  |  |  | - |  |  |  | 1,566,739 |
Capital expenditures |  |  | 107,577 |  |  |  | 4,500,485 |  |  |  | 30,941 |  |  |  | - |  |  |  | 4,639,003 |
Income tax expenses |  |  | 1,030,904 |  |  |  | 1,486,371 |  |  |  | - |  |  |  | 242,805 |  |  |  | 2,760,080 |
Segment profit (loss) |  |  | 3,335,076 |  |  |  | 4,395,629 |  |  |  | (82,323 | ) |  |  | (1,001,597 | ) |  |  | 6,646,785 |
Segment assets as of December 31, 2017 |  | $ | 10,899,522 |  |  | $ | 60,000,714 |  |  | $ | 567,030 |  |  | $ | 9,664,563 |  |  | $ | 81,131,829 |
|  | For the year ended December 31, 2016 |
|  | Machinery and Equipment sales |  |  | Construction materials sales |  |  | Municipal construction projects |  |  | Technological consulting and other services |  |  | Total |
Revenues |  | $ | 13,166,604 |  |  | $ | 18,424,613 |  |  | $ | - |  |  | $ | 833,052 |  |  | $ | 32,424,269 |
Cost of goods sold |  |  | 5,456,102 |  |  |  | 12,400,372 |  |  |  | - |  |  |  | 514,754 |  |  |  | 18,371,228 |
Gross profit |  |  | 7,710,502 |  |  |  | 6,024,241 |  |  |  | - |  |  |  | 318,298 |  |  |  | 14,053,041 |
Interest expense and charges |  |  | 650,727 |  |  |  | 795,833 |  |  |  | 282 |  |  |  | 3,547 |  |  |  | 1,450,389 |
Depreciation and amortization |  |  | 189,404 |  |  |  | 1,170,605 |  |  |  | 1,251 |  |  |  | - |  |  |  | 1,361,260 |
Capital expenditures |  |  | 87,267 |  |  |  | 9,284,800 |  |  |  | - |  |  |  | - |  |  |  | 9,372,067 |
Income tax expenses |  |  | 945,186 |  |  |  | 967,221 |  |  |  | - |  |  |  | 39,949 |  |  |  | 1,952,356 |
Segment profit |  |  | 3,125,268 |  |  |  | 2,830,950 |  |  |  | (901,145 | ) |  |  | (551,993 | ) |  |  | 4,503,080 |
Segment assets as of December 31, 2016 |  | $ | 12,870,817 |  |  | $ | 47,829,971 |  |  | $ | (186,139 | ) |  | $ | 2,146,350 |  |  | $ | 62,660,999 |

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- Definition Tabular disclosure of the profit or loss and total assets for each reportable segment. An entity discloses certain information on each reportable segment if the amounts (a) are included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) are otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 25 -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8813-108599 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=108376223&loc=d3e13816-109267 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 21 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8721-108599 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8906-108599 + Details
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