# EDGAR Filing Document

**Accession Number:** 0002056039
**File Stem:** 0001213900-25-070859
**Filing Date:** 2025-8
**Character Count:** 11802
**Document Hash:** a45922045d0d765dff78aa7b7ca19117
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001213900-25-070859.hdr.sgml**: 20250804

**ACCESSION NUMBER**: 0001213900-25-070859

**CONFORMED SUBMISSION TYPE**: SCHEDULE 13G/A

**PUBLIC DOCUMENT COUNT**: 2

**FILED AS OF DATE**: 20250804

**DATE AS OF CHANGE**: 20250804

**SUBJECT COMPANY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Jinxin Technology Holding Co
- **CENTRAL INDEX KEY:** 0001967631
- **STANDARD INDUSTRIAL CLASSIFICATION:** SERVICES-EDUCATIONAL SERVICES [8200]
- **ORGANIZATION NAME:** 07 Trade & Services
- **EIN:** 000000000
- **STATE OF INCORPORATION:** E9
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** SCHEDULE 13G/A
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 005-94854
- **FILM NUMBER:** 251177914

**BUSINESS ADDRESS:**
- **STREET 1:** SHENGYIN BUILDING, SHENGXIA ROAD 666
- **STREET 2:** BUILDING D, FLOOR 8
- **CITY:** PUDONG DISTRICT, SHANGHAI
- **STATE:** F4
- **ZIP:** 201203
- **BUSINESS PHONE:** 86-21-5058-2081

**MAIL ADDRESS:**
- **STREET 1:** SHENGYIN BUILDING, SHENGXIA ROAD 666
- **STREET 2:** BUILDING D, FLOOR 8
- **CITY:** PUDONG DISTRICT, SHANGHAI
- **STATE:** F4
- **ZIP:** 201203
**FILED BY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Namibox Technology Ltd
- **CENTRAL INDEX KEY:** 0002056039

**ORGANIZATION NAME:**
- **EIN:** 000000000
- **STATE OF INCORPORATION:** D8
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** SCHEDULE 13G/A

**BUSINESS ADDRESS:**
- **STREET 1:** 8F, BUILDING D, SHENGXIA ROAD 666
- **STREET 2:** PUDONG DISTRICT
- **CITY:** SHANGHAI
- **STATE:** F4
- **ZIP:** 201210
- **BUSINESS PHONE:** 862150582081

**MAIL ADDRESS:**
- **STREET 1:** 8F, BUILDING D, SHENGXIA ROAD 666
- **STREET 2:** PUDONG DISTRICT
- **CITY:** SHANGHAI
- **STATE:** F4
- **ZIP:** 201210

## Exhibit 99.1

**Exhibit 99.1**

**Joint Filing Agreement**

In accordance with Rule 13d-1(k) promulgated under the Securities Exchange Act of 1934, as amended, each of the undersigned hereby agrees to the joint filing with all other Reporting Persons (as such term is defined in the Schedule 13G referred to below) on behalf of each of them of a statement on Schedule 13G (including amendments thereto) with respect to the ordinary shares, par value US$0.00001428571428 per share, of Jinxin Technology Holding Company, a company incorporated in the Cayman Islands, and that this Agreement may be included as an Exhibit to such joint filing. This Agreement may be executed in any number of counterparts, all of which taken together shall constitute one and the same instrument.

IN WITNESS WHEREOF, the undersigned hereby execute this Agreement as of August 4, 2025.

---

| | |
|:---|:---|
| **Namibox Technology Limited** | **Namibox Technology Limited** |
| By: | /s/ Jin Xu |
| Name: | Jin Xu |
| Title: | Director |
| **Jin Xu** | **Jin Xu** |
| By: | /s/ Jin Xu |
| Name: | Jin Xu |

---

### UNITED STATES SECURITIES AND EXCHANGE COMMISSION
**Washington, D.C. 20549**

## SCHEDULE 13G

### Under the Securities Exchange Act of 1934

**(Amendment No. 1)**

**Issuer:** Jinxin Technology Holding Company

**Title of Class of Securities:** Ordinary shares, par value US$0.00001428571428 per share

**CUSIP Number:** 47760D102

**Date of Event Which Requires Filing of this Statement:** 05/15/2025

**Check the appropriate box to designate the rule pursuant to which this Schedule is filed:**

- [ ] Rule 13d-1(b)

- [ ] Rule 13d-1(c)

- [x] Rule 13d-1(d)

---

| 1. | Names of Reporting Persons<br>Namibox Technology Limited | Names of Reporting Persons<br>Namibox Technology Limited |
|:---|:---|:---|:---|
| 2. | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [ ] (b) [ ] | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [ ] (b) [ ] |
| 3. | SEC Use Only | SEC Use Only |
| 4. | Citizenship or Place of Organization<br>D8 | Citizenship or Place of Organization<br>D8 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 5. | Sole Voting Power<br>357136214.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 6. | Shared Voting Power<br>0.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 7. | Sole Dispositive Power<br>357136214.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 8. | Shared Dispositive Power<br>0.00 |
| 9. | Aggregate Amount Beneficially Owned by Each Reporting Person<br>357136214.00 | Aggregate Amount Beneficially Owned by Each Reporting Person<br>357136214.00 |
| 10. | Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) [ ] | Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) [ ] |
| 11. | Percent of Class Represented by Amount in Row (9)<br>25.09% | Percent of Class Represented by Amount in Row (9)<br>25.09% |
| 12. | Type of Reporting Person (See Instructions)<br>CO | Type of Reporting Person (See Instructions)<br>CO |

**Comment for Type of Reporting Person:** (1) For Rows 5, 7 and 9: represents 357,136,214 ordinary shares directly held by Namibox Technology Limited, a British Virgin Islands company wholly-owned by Mr. Jin Xu.

(2) For Row 11: the percentage of class of securities beneficially owned by each Reporting Person is calculated based on a total of 1,423,285,396 ordinary shares issued and outstanding as of June 20, 2025 according to records of the Issuer.

---

| 1. | Names of Reporting Persons<br>Jin Xu | Names of Reporting Persons<br>Jin Xu |
|:---|:---|:---|:---|
| 2. | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [ ] (b) [ ] | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [ ] (b) [ ] |
| 3. | SEC Use Only | SEC Use Only |
| 4. | Citizenship or Place of Organization<br>F4 | Citizenship or Place of Organization<br>F4 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 5. | Sole Voting Power<br>357136214.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 6. | Shared Voting Power<br>0.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 7. | Sole Dispositive Power<br>357136214.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 8. | Shared Dispositive Power<br>0.00 |
| 9. | Aggregate Amount Beneficially Owned by Each Reporting Person<br>357136214.00 | Aggregate Amount Beneficially Owned by Each Reporting Person<br>357136214.00 |
| 10. | Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) [ ] | Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) [ ] |
| 11. | Percent of Class Represented by Amount in Row (9)<br>25.09% | Percent of Class Represented by Amount in Row (9)<br>25.09% |
| 12. | Type of Reporting Person (See Instructions)<br>IN | Type of Reporting Person (See Instructions)<br>IN |

**Comment for Type of Reporting Person:** (1) For Rows 5, 7 and 9: represents 357,136,214 ordinary shares directly held by Namibox Technology Limited, a British Virgin Islands company wholly-owned by Mr. Jin Xu.

(2) For Row 11: the percentage of class of securities beneficially owned by each Reporting Person is calculated based on a total of 1,423,285,396 ordinary shares issued and outstanding as of June 20, 2025 according to records of the Issuer.

---

**Item 1(a). Name of Issuer:**
Jinxin Technology Holding Company

**Item 1(b). Address of Issuer's Principal Executive Offices:**
Floor 8, Building D, Shengyin Building, Shengxia Road 666, Pudong District, Shanghai 201203, People's Republic of China

**Item 2(a). Name of Person Filing:**
Namibox Technology Limited
Jin Xu

**Item 2(b). Address of Principal Business Office:**
Namibox Technology Limited: Floor 8, Building D, Shengyin Building, Shengxia Road 666, Pudong District, Shanghai, People's Republic of China

Jin Xu: Floor 8, Building D, Shengyin Building, Shengxia Road 666, Pudong District, Shanghai, People's Republic of China

**Item 2(c). Citizenship:**
Namibox Technology Limited: British Virgin Islands

Jin Xu: People's Republic of China

**Item 2(d). Title of Class of Securities:**
Ordinary shares, par value US$0.00001428571428 per share

**Item 2(e). CUSIP Number:**
47760D102

**Item 3. If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:**

(a) [ ] Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o).

(b) [ ] Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c).

(c) [ ] Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c).

(d) [ ] Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8).

(e) [ ] An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);

(f) [ ] An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);

(g) [ ] A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);

(h) [ ] A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);

(i) [ ] A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);

(j) [ ] A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J), if filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J), please specify the type of institution:

(k) [ ] Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).

**Item 4. Ownership:**

**(a) Amount beneficially owned:**

Namibox Technology Limited: 357,136,214
Jin Xu: 357,136,214
Represents 357,136,214 ordinary shares directly held by Namibox Technology Limited, a British Virgin Islands company wholly-owned by Mr. Jin Xu

**(b) Percent of class:**

Namibox Technology Limited: 25.09%
Jin Xu: 25.09%
The percentage of class of securities beneficially owned by each Reporting Person is calculated based on a total of 1,423,285,396 ordinary shares issued and outstanding as of June 20, 2025 according to records of the Issuer.

**(c) Number of shares as to which the person has:**

**(i) Sole power to vote or to direct the vote:**

Namibox Technology Limited: 357,136,214
Jin Xu: 357,136,214

**(ii) Shared power to vote or to direct the vote:**

Namibox Technology Limited: 0
Jin Xu: 0

**(iii) Sole power to dispose or to direct the disposition of:**

Namibox Technology Limited: 357,136,214
Jin Xu: 357,136,214

**(iv) Shared power to dispose or to direct the disposition of:**

Namibox Technology Limited: 0
Jin Xu: 0

**Item 5. Ownership of Five Percent or Less of a Class.**

[x] If this statement is being filed to report the fact that as of the date hereof the reporting person has ceased to be the beneficial owner of more than five percent of the class of securities, check the following.

**Item 6. Ownership of More than 5 Percent on Behalf of Another Person.**

Not Applicable

**Item 7. Identification and Classification of the Subsidiary**

Not Applicable

**Item 8. Identification and Classification of Members of the Group**

Not Applicable

**Item 9. Notice of Dissolution of Group**

Not Applicable

**Item 10. Certification:**

—

### SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

**Namibox Technology Limited**

**Date:** 08/04/2025

**By:** /s/ Jin Xu

**Name & Title:** Jin Xu / Director

**Jin Xu**

**Date:** 08/04/2025

**By:** /s/ Jin Xu

**Name & Title:** Jin Xu