Company: GDSTR
Filing Date: 2025-01-30
Form Type: S-4
Source: 0001213900-25-008051
Chunk: 543

Company: Goldenstone Acquisition Ltd.
Filing Date: 2025-01-30
Form: S-4
Chunk 543
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 Agreement may be executed in one or more counterparts, all of which shall be considered one and the same agreement, it being understood that each party need not sign the same counterpart. This Agreement shall become effective when each party shall have received a counterpart hereof signed by all of the other parties. Signatures delivered electronically or by facsimile shall be deemed to be original signatures. 16. Termination . This Agreement shall terminate upon the earliest of (a) the Closing of the Merger, (b) the termination of the BCA in accordance with its terms, and (c) the time this Agreement is terminated upon the mutual written agreement of Goldenstone, the Company and the Sponsor. [Signature Pages Follow] Annex A-84

IN WITNESS WHEREOF, the parties hereto have executed this Stockholder Support Agreement as of the date first written above.

| GOLDENSTONE ACQUISITION LIMITED |     |                         |
| By:                             |     | /s/ Eddie Ni            |
|                                 |     | Eddie Ni                |
|                                 |     | Chief Executive Officer |

| INFINTIUM FUEL CELL SYSTEMS, INC. |     |                         |
| By:                               |     | /s/ Yan (Chris) Feng    |
|                                   |     | Yan (Chris) Feng        |
|                                   |     | Chief Executive Officer |

Annex A-85

IN WITNESS WHEREOF, the parties hereto have executed this Stockholder Support Agreement as of the date first written above.

| Ancheng Industries, Inc |     |           |
| By:                     |     | /s/ Yi Li |
| Name:                   |     | Yi Li     |
| Title:                  |     | President |
| Address:                |     |           |
| Email:                  |     |           |

Annex A-86

EXHIBIT A Stockholders of Record — Number of Shares

| Stockholder of Record   |     | Number of Shares |
| Ancheng Industries, Inc |     |       65,491,786 |

Annex A-87 EXHIBIT B JOINDER TO STOCKHOLDER SUPPORT AGREEMENT This JOINDER TO STOCKHOLDER SUPPORT AGREEMENT (this “ Joinder ”) is made and entered into as of [•], by and among each of the stockholders of Infintium Fuel Cell Systems, Inc., a Delaware corporation (the “ Company ”), whose names appear on the signature pages of this Joinder (each, a “ Stockholder ” and