Intangible Assets, net

3 Months Ended

Mar. 31, 2023

Goodwill and Intangible Assets Disclosure [Abstract]

Intangible Assets, net

10. Intangible Assets, net

Intangible assets as of December 31, 2022 and March 31, 2023 consisted of the followings:

	December 31, 2022			March 31, 2023
Computer software at cost	$	104,211		$	104,821
Sewage discharge permit		1,762,129			1,772,440
		1,866,340			1,877,261
Accumulated amortization		(557,282	)		(681,826	)
	$	1,309,058		$	1,195,435

Amortization expenses were $131,571 and $121,754 for the three months ended March 31, 2022 and 2023, respectively.

Total future amortization expenses for finite-lived intangible assets as of March 31, 2023 were estimated as follows:

Remainder of 2023	$	364,345
2024		483,835
2025		321,775
2026		6,077
2027		4,555
Thereafter		14,848
Total	$	1,195,435