Exhibit
31.2



Rule
13a-14(a) Certification of the Interim Principal Financial Officer



I,
Arthur Mikaelian, certify that:



1.
I have reviewed this Form 10-K for the year ended December 31, 2021 of Quanta, Inc.;



2.
Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary
to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the
period covered by this report;



3.
Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material
respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this
report;



4.
I am responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and
15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant
and have:



a)
Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under my supervision,
to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to me by others
within those entities, particularly during the period in which this report is being prepared;



b)
Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under
our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements
for external purposes in accordance with generally accepted accounting principles;



c)
Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report my conclusions
about the effectiveness of the disclosure controls and procedures as of the end of the period covered by this report based on such evaluation;
and



d)
Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s
fourth fiscal quarter that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control
over financial reporting; and



5.
I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors
and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):



a)
All significant deficiencies and material weaknesses in the design or operation of internal controls over financial reporting which are
reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information;
and



b)
Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s
internal control over financial reporting.



|Date:
    April 15, 2022 | By: | /s/
    Arthur Mikaelian                                                                                                      
|------------------------ | --- | ------------------------------------------------------------------------------------------------------------------------------
|                         |     | Arthur
                                            Mikaelian
    President,
    Chairman, Director and Chief Executive Officer
|                         |     | (Principal
    Executive Officer and Interim Principal Financial Officer)