OPINION
POGUE, Senior Judge:
In this action, Plaintiff, Ceramark Technology, Inc. ("Ceramark") challenges the affirmative final determination of circumvention of an antidumping duty order.1 Compl., ECF No. 9 at ¶ 2. In that determination, the Department of Commerce ("Commerce") found that 17 inch diameter graphite electrodes (which Ceramark imports) constitute merchandise altered in form or appearance in such minor respects that it was properly subject to the antidumping duty order for graphite electrodes 16 inches or smaller in diameter.2 Plaintiff claims that Commerce's determination is neither in accordance with law nor supported by substantial evidence. Rule 56.2 Mot. for J. on the Agency R. on behalf of Pl. Ceramark Tech., Inc., ECF No. 25 ("Rule 56.2 Mot.").
Plaintiff is correct in part: Because Commerce failed to base its determination on a reasonable reading of the record evidence in context, its determination is not supported by substantial evidence. The court remands for further consideration in accordance with this opinion.
BACKGROUND
I. Antidumping Duty Determination and Order
This action derives from a petition by SGL Carbon LLC and Superior Graphite Co. ("Petitioners" or "Defendant-Intervenors") alleging that imports of small diameter graphite electrodes ("SDGE") from the People's Republic of China ("PRC" or "China") were being dumped in the United States. [SDGE] from the [PRC], 73 Fed. Reg. 8287 (Dep't Commerce Feb. 13, 2008) (initiation of antidumping duty investigation) ("AD Initiation Notice").
Commerce, having conferred with Defendant-Intervenors to ensure an accurate scope definition reflective of the domestic industry's concerns, limited its investigation to "all [SDGE] of any length, whether or not finished, of a kind used in furnaces, with a nominal or actual diameter of 400 millimeters (16 inches) or less, and whether or not attached to a graphite pin joining system or any other type of joining system or hardware." Id. at 8287.3 Commerce made a final affirmative determination of sales at less than fair value based on this scope definition. [SDGE] from the [PRC], 74 Fed.Reg. 2049, 2050 (Dep't Commerce Jan. 14, 2009) (final determination of sales at less than fair value and affirmative determination of critical circumstances) ("AD Final Determination"). The International Trade Commission ("ITC") similarly made a final affirmative determination of material injury to U.S. industry within this scope definition. [SDGE] from China, USITC Pub. 4062, Inv. No. 731-TA-1143 (Feb. 2009) ("ITC Final Determination") at 6, 9-10.4 Drawing on the arguments of the domestic industry, the ITC found "a clear dividing line between [small diameter and large diameter graphite electrodes]," and defined the threatened domestic product as "coextensive with the scope" of Commerce's antidumping duty determination. Id. at 10.
Based on the final affirmative determinations of Commerce and the ITC, Commerce issued an antidumping duty order on SDGE from the PRC. AD Order, 74 Fed.Reg. at 8775. Commerce again used the same scope definition, with the dividing line between small and large diameter graphite electrodes explicitly and unambiguously specified at 16 inches. Id.
II. Circumvention Investigation and Determination
Several years later, at the request of Defendant-Intervenors, Commerce investigated whether imports of graphite electrodes larger than 16 inches but smaller than 18 inches in diameter were being used to circumvent the antidumping duty order on SDGE. [SDGE] from the [PRC], 77 Fed.Reg. 37,873 (Dep't Commerce June 25, 2012) (initiation of anticircumvention inquiry) ("Circumvention Initiation Notice").5 Commerce issued an affirmative determination of circumvention, finding that 17 inch graphite electrodes constituted a product altered in form or appearance in such minor respects that it should be included with the scope of the SDGE order pursuant to 19 U.S.C. § 1677j(c). Circumvention Final Determination, 78 Fed.Reg. at 56,864-65.6 Plaintiff now challenges this determination. Rule 56.2 Mot., ECF No. 25; Mem. of Points & Authorities in Supp. of Pl.'s [Rule 56.2 Mot.], ECF No. 25-1 at 9.
STANDARD OF REVIEW
The court has jurisdiction pursuant to 28 U.S.C. § 1581(c) (2012) and will therefore uphold Commerce's final affirmative anticircumvention determination unless it is "unsupported by substantial evidence on the record, or otherwise not in accordance with law." 19 U.S.C. § 1516a(b)(1)(B)(i). Substantial evidence is "such relevant evidence as a reasonable mind might accept as adequate to support a conclusion." Universal Camera Corp. v. NLRB, 340 U.S. 474, 477, 71 S.Ct. 456, 95 L.Ed. 456 (1951) (quoting Consol. Edison Co. of New York v. N.L.R.B., 305 U.S. 197, 229, 59 S.Ct. 206, 83 L.Ed. 126 (1938)). Substantial evidence review requires consideration of "the record as a whole, including any evidence that fairly detracts from the substantiality of the evidence," Gallant Ocean (Thailand) Co. v. United States, 602 F.3d 1319, 1323 (Fed.Cir.2010) (internal quotation marks and citation omitted), and asks, in light of that evidence, whether Commerce's determination was reasonable. Nippon Steel Corp. v. United States, 458 F.3d 1345, 1351 (Fed. Cir.2006).7
DISCUSSION
I. Antidumping Duty Order Scope and Circumvention
In questions of scope, the language of the antidumping duty order is "the cornerstone of our analysis." Duferco Steel, Inc. v. United States, 296 F.3d 1087, 1097 (Fed.Cir.2002). When the language is ambiguous in application, Commerce may interpret or clarify the order, 19 C.F.R. § 351.225(a),8 and the court will grant "significant deference" to Commerce's interpretation. Duferco Steel, 296 F.3d at 1094-95 (citation omitted). It follows that, when circumvention "seriously undermine[s] the effectiveness of the remedies provided" by the antidumping duty regime, S.Rep. No. 100-71, at 101 (1987) (legislative history of 19 U.S.C. § 1677j), Commerce may determine that a product in the penumbra of an order, outside the literal scope of its language, is covered by that order. 19 U.S.C. § 1677j.9 Nevertheless, Commerce cannot change the order or interpret it "in a way contrary to [its] terms." Wheatland Tube Co. v. United States, 161 F.3d 1365, 1370 (Fed.Cir. 1998) (quoting Smith Corona Corp. v. United States, 915 F.2d 683, 686 (Fed.Cir. 1990)).10
II. Commerce's Minor Alteration Analytic Method
With a finding of circumvention, Commerce may include a product "altered in form or appearance in minor respects" within the scope of an antidumping duty order, 19 U.S.C. § 1677j(c), even if that product "might otherwise fall outside the literal scope of the order." Target Corp. v. United States, 609 F.3d 1352, 1362 (Fed. Cir.2010) (emphasis omitted) (relying on Wheatland Tube, 161 F.3d at 1371).11
The statute is silent with regard to what factors Commerce should consider when determining whether an alteration is minor. Commerce's practice is to analyze five factors12 provided in the statute's legislative history (the Senate Report Criteria). Circumvention Prelim. Mem. at 5; I & D Mem. cmt. 1 at 10. Because the Senate Report Criteria may be insufficient for analysis of any given case,13 Commerce will also consider additional context-specific criteria. Circumvention Prelim. Mem. at 5.14 This approach is in keeping with the Senate's directive that Commerce "apply practical measurements regarding minor alterations, so that circumvention can be dealt with effectively," S.Rep. No. 100-71, at 100, and with "Commerce's duty to determine margins as accurately as possible, and to use the best information available to it in doing so." Lasko Metal Prods., Inc. v. United States, 43 F.3d 1442, 1443 (Fed.Cir.1994).
As Commerce's choice of factors is based on the relevant statutory language and legislative history, its minor alterations analytic method cannot be per se unreasonable.15 Rather, it is in accordance with law.
III. Commerce's Minor Alteration Analytic Method in Application
While Commerce's analytic method is not per se unreasonable, circumvention is an inherently factual determination16 and therefore must be supported by substantial evidence. 19 U.S.C. § 1516a(b)(1)(B)(i).
In a minor alterations inquiry, whatever tests are derived and devised, whatever factors are considered, substantial evidence requires review of the record as a whole, including evidence contrary to Commerce's determination, and a finding that, given all the evidence, Commerce has still acted reasonably. Gallant Ocean, 602 F.3d at 1323; Nippon Steel, 458 F.3d at 1351. A minor alteration must be minor. It must be insignificant.17 It cannot make the product materially different from that specified in the order's scope. Wheatland Tube, 161 F.3d at 1371. Otherwise, Commerce would be able to use circumvention to change an order or read it contrary to its terms, and the minor alteration inquiry would upend "the purpose of the antidumping laws" by "allow[ing] Commerce to assess antidumping duties on products intentionally omitted from the ITC's injury investigation." Wheatland Tube, 161 F.3d at 1370-71.18 Commerce's "total failure to consider or discuss record evidence which, on its face, provides significant support for an alternative conclusion renders [a determination] unsupported by substantial evidence." Allegheny Ludlum Corp. v. United States, 24 CIT 452, 479, 112 F.Supp.2d 1141, 1165 (2000) (citations omitted).
Here, Commerce has either ignored or dismissed record evidence that, on its face, indicates that the alteration at issue — a one inch increase in graphite electrode diameter — is neither minor nor an alteration. Specifically: Commerce has not reasonably considered the prior commercial availability of the product.19 See, e.g., Ceramark Initial Questionnaire Resp., A-570-929 Anticircumvention Inquiry (Aug. 3 2012), reproduced in Pub. App. to Mem. of Points of Authorities in Supp. of Pl.'s Rule 56.2 Mot. for J. on the Agency R. ("Pub. App. to Rule 56.2 Mot."), ECF No. 28-2 at Tab 2, at 3 (citing Exs. 1 & 2 to id., respectively [Nat'l Elec. Mfrs. Ass'n ("NEMA")] Standards Publication Nos. CG 1-1993: Manufactured Graphite/Carbon Elecrtrodes (Jan. 26, 1993) at 2, 8; NEMA Standards Publication No. CG 1-2001: Manufactured Graphite/Carbon Elecrtrodes (2002) at 7); Jilin Carbon Initial Questionnaire Resp., A-570-929 Anti-circumvention Inquiry (July 25, 2012) ("Jilin Resp."), reproduced in Pub. App. to Rule 56.2 Mot., ECF No. 28-5 at Tab 5, at 2, 8, 11-12 (citing same 1993 and 2001 NEMA standards); Ceramark's 1st Supp. Questionnaire Resp., A-570-929 Anticircumvention Inquiry (Oct. 17, 2012) ("Ceramark's Supp. Resp."), reproduced in Pub. App. to Rule 56.2 Mot., ECF No. 28-7 at Tab 7, at 6-7. Commerce also has not considered the importance of diameter as a defining characteristic of graphite electrodes. See, e.g., Ceramark's Supp. Resp., ECF No. 28-7 at Tab 7, at 2-6; Jilin Resp., ECF No. 28-5 at Tab 5, at 8-13. Moreover, Commerce has not considered the choice made by Defendant-Intervenors (the original petitioners in the antidumping duty investigation), its own corresponding choice, and the ITC's decision to explicitly and unambiguously exclude20 17 inch graphite electrodes from the SDGE antidumping duty investigation, injury determination, and order.21 See AD Initiation Notice, 73 Fed.Reg. at 8287; AD Final Determination, 74 Fed.Reg. at 2050; AD Order, 74 Fed.Reg. at 8775; ITC Final Determination, USCIT Pub. 4062 at 6, 9-10.22
Without having given due consideration to relevant evidence before it, Commerce has not based its decision on a reasonable reading of the record evidence.23 Thus, Commerce's failure to consider evidence that supports the possibility of an alternative conclusion has rendered its determination unsupported by substantial evidence.
CONCLUSION
Accordingly, because Commerce failed to base its determination on a reasonable reading of the record, its determination is not supported by substantial evidence. The court remands for further consideration in accordance with this opinion. Commerce shall have until November 5, 2014 to complete and file its remand redetermination. Plaintiff shall have until November 19, 2014 to file comments. Defendant and Defendant-Intervenor shall have until December 1, 2014 to file any reply.
IT IS SO ORDERED.