2AHU2XMH400AM/FM/WB/AUX/USB/BT/Wired Remote

1/1 US Agent for Service of Process LETTER OF ATTESTATION TO: Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 US Agent for Service of Process: Company Name: ASA ELECTRONICS FRN: 0022690382 Contact Name: Julia Willis Address: 2602 MARINA DRIVE, ELKHART, IN 46514, United States Telephone No: (574)-266-3172 Email: [email protected] Applicant: Company name: ASA Electronics Shenzhen Limited Product Description: AM/FM/WB/AUX/USB/BT/Wired Remote Grantee code: 2AHU2 FCC ID: 2AHU2XMH400 FRN：0025445636 Contact Name: Thomas Leung Address: Room 503, 5/F., Unit A, Skyworth Building, Gaoxin Avenue.1.S., Nanshan District, Shen Zhen 518057, China Telephone No: 86-755-8279 3629 Email: [email protected] ASA Electronics Shenzhen Limited certifies that, as of the date of this filing of the application with the TCB, [ASA ELECTRONICS] is our designated US agent for service of process for the above referenced FCC ID. ASA Electronics Shenzhen Limited accepts to maintain an agent for no less than one year after the grantee has terminated all marketing and importation or the conclusion of any commission related proceeding involving equipment. [ASA ELECTRONICS] accepts, as of the date of the filing of the application, the obligation of the designated US agent for service of process for the above reference FCC ID. The US Agent for Service of Process is aware of and agrees to comply with the requirements outlined in the FCC Equipment Authorization Program, Report and Order FCC 22-84, and clause § 2.911. The Applicant is aware of and agrees to comply with the requirements outlined in the FCC Equipment Authorization Program, Report and Order FCC 22-84, and clause § 2.911. Date: 2024-03-26 Applicant’s Name: Thomas Leung US Agent’s Name: Julia Willis Title: Manager Title: Manager Signature

ASA Electronics Shenzhen Limited Covered Equipment Certification Attestation Letter 2024-02-27 Nemko North America, Inc. 303 River Road Ottawa K1V 1H2 Canada ATTN.: Reviewing Engineer FCC ID:2AHU2XMH400 ASA Electronics Shenzhen Limited (“the applicant”) certifies that the equipment for which authorization is sought is not “covered” equipment prohibited from receiving an equipment authorization pursuant to section 2.903 of the FCC rules. Note: If the equipment for which the applicant seeks authorization is produced by any of the entities identified on the current Covered List, the applicant should include an explanation on why the equipment is not “covered” equipment. ASA Electronics Shenzhen Limited (“the applicant”) certifies that, as of the date of the filing of the application, the applicant is not identified on the Covered List as an entity producing “covered” equipment. Signed: Printed name: Thomas Leung Title: Manager Company Name: ASA Electronics Shenzhen Limited Address: Room 503, 5/F., Unit A, Skyworth Building, Gaoxin Avenue.1.S., Nanshan District, Shen Zhen 518057, China Phone: 86-755-8279 3629 E-Mail: [email protected] Date: 2024-02-27

ASA Electronics Shenzhen Limited 2024-02-27 Nemko North America, Inc. 303 River Road Ottawa, Ontario, Canada K1V 1H2 AUTHORITY TO ACT AS AGENT - FCC On our behalf, I appoint Damon Hu, Gongdong Dongdian Testing Service Co.,Ltd.(17, Zongbu Road 2, Songshan Lake Sci&Tech, Industry Park, Dongguan City, Guangdong Province, China, 523808), to act as our agent in the preparation of this application for equipment certification. I certify that submitted documents properly describe the device or system for which equipment certification is sought. I also certify that each unit manufactured, imported or marketed, as defined in FCC regulations will have affixed to it a label identical to that submitted for approval with this application. In signing this letter, Applicant certifies that neither the applicant nor any party to the application is not subject to a denial of Federal benefits, that include FCC benefits, pursuant to Section 5301 of the Anti- Drug Abuse Act of 1988, 21 U.S.C. § 862 because of a conviction for possession or distribution of a controlled substance. See 47 CFR 1.2002(b) for the definition of a "party" for these purposes. For instances where our authorized agent signs the application for certification on our behalf, I acknowledge that all responsibility for complying with the terms and conditions for certification, as specified by Nemko North America Inc., still resides still resides with us. Sincerely, Printed name: Thomas Leung Title: Manager Company Name: ASA Electronics Shenzhen Limited Address: Room 503, 5/F., Unit A, Skyworth Building, Gaoxin Avenue.1.S., Nanshan District, Shen Zhen 518057, China Phone: 86-755-8279 3629 E-Mail: [email protected] Date: 2024-02-27

ASA Electronics Shenzhen Limited 2024-02-27 Nemko North America, Inc. 303 River Road Ottawa, Ontario, Canada K1V 1H2 REQUEST FOR CONFIDENTIALITY – FCC FCC ID: 2AHU2XMH400 Pursuant to Sections 0.457(d) and 0.459 of the Commission’s Rules and FCC Guidance document 726920, we hereby request permanent confidential treatment of exhibits identified as such in the table below and request they are permanently withheld from public review based on the documents containing trade secrets and proprietary information not customarily released to the public. The public disclosure of this information might be harmful to the applicant and provide unjustified benefits to its competitors. We also request short-term confidentiality on certain exhibits until the intended date of marketing as outlined below. We request the exhibits be withheld from public view for a period of insert number of 180 days (cannot exceed 180 days) days. We attest marketing of the product will only commence after the period of short-term confidentiality expires, or if marketing is to commence before the requested number of days listed above, the grantee will inform Nemko to release the Short-Term Confidentiality information withheld on the FCC equipment authorization website. Exhibit Type of Confidentiality Requested Block Diagrams ☒ Permanent ☐ Short Term External Photos ------------------ ☒ Short Term Internal Photos ☐ Permanent* ☒ Short Term Operation Description ☒ Permanent ☐ Short Term Parts List & Placement/BOM ☐ Permanent ☐ Short Term Tune-Up Procedure ☐ Permanent ☐ Short Term Schematic Diagrams ☒ Permanent ☐ Short Term Test Setup Photos ------------------ ☒ Short Term User’s Manual ☐ Permanent* ☒ Short Term The asterisked items (*) require further information to be provided in this justification letter before permanent confidentiality will be extended to these exhibits. Please refer to FCC KDB 726920 D01 found at: https://apps.fcc.gov/oetcf/kdb/forms/FTSSearchResultPage.cfm?switch=P&id=41731 and review section II, 3) regarding specific information that must accompany these requests. Note: any documents held under the Short-Term confidentiality will automatically become public after the requested time if an appropriate extension request has not been received. Any exhibits (i.e., schematic diagrams) that may have already been requested to have “Permanent” confidentiality as shown above need not be repeated under Short-Term confidentiality request. Sincerely, Signed: Printed name: Thomas Leung Title: Manager Company Name: ASA Electronics Shenzhen Limited Address: Room 503, 5/F., Unit A, Skyworth Building, Gaoxin Avenue.1.S., Nanshan District, Shen Zhen 518057, China Phone: 86-755-8279 3629 E-Mail: [email protected] Date: 2024-02-27

Guangdong Dongdian Testing Service Co., Ltd. Report No.: DDT-RE23110721-2E03 TRF No.: RT-4-E-02-015 FCC RF Exposure Report MPE Ver.1.1 Page 1 of 8 FCC RF EXPOSURE REPORT Applicant : ASA Electronics Shenzhen Limited Address of Applicant : Room 503, 5/F., Unit A, Skyworth Building, Gaoxin Avenue.1.S., Nanshan District, Shen Zhen Manufacturer : ASA Electronics, LLC. Address of Manufacturer : 2602 Marina Drive, Elkhart, IN 46514 USA Equipment under Test : AM/FM/WB/AUX/USB/BT/Wired Remote Model No. : XMH400 FCC ID : 2AHU2XMH400 Test Standard(s) : KDB447498 D01 General RF Exposure Guidance v06 Report No. : DDT-RE23110721-2E03 Issue Date : 2024/02/24 Issue By : Guangdong Dongdian Testing Service Co., Ltd. Address of Laboratory : Unit 2, Building 1, No. 17, Zongbu 2nd Road, Songshan Lake Park, Dongguan, Guangdong, China, 523808 Guangdong Dongdian Testing Service Co., Ltd. Report No.: DDT-RE23110721-2E03 TRF No.: RT-4-E-02-015 FCC RF Exposure Report MPE Ver.1.1 Page 2 of 8 Table of Contents Test report declares............................................................................................................3 1. General Information ............................................................................................................ 5 1.1. Description of equipment .................................................................................................... 5 1.2. Assess laboratory ................................................................................................................ 6 2. RF Exposure Evaluation ..................................................................................................... 7 2.1. Requirement ........................................................................................................................ 7 2.2. Calculation method ............................................................................................................. 7 2.3. Estimation result .................................................................................................................. 8 Guangdong Dongdian Testing Service Co., Ltd. Report No.: DDT-RE23110721-2E03 TRF No.: RT-4-E-02-015 FCC RF Exposure Report MPE Ver.1.1 Page 3 of 8 Test Report Declare Applicant : ASA Electronics Shenzhen Limited Address of Applicant : Room 503, 5/F., Unit A, Skyworth Building, Gaoxin Avenue.1.S., Nanshan District, Shen Zhen Equipment under Test : AM/FM/WB/AUX/USB/BT/Wired Remote Model No. : XMH400 Manufacturer : ASA Electronics, LLC. Address of Manufacturer : 2602 Marina Drive, Elkhart, IN 46514 USA Standard Used: KDB447498 D01 General RF Exposure Guidance v06 We Declare: The equipment described above is assessed by Guangdong Dongdian Testing Service Co., Ltd and in the configuration assessed the equipment complied with the standards specified above. The assessed results are contained in this report and Guangdong Dongdian Testing Service Co., Ltd is assumed of full responsibility for the accuracy and completeness of these assess. After evaluation, our opinion is that the equipment In Accordance with above standard. Report No.: DDT-RE23110721-2E03 Date of Receipt: 2023/11/17 Date of Test: 2023/11/17~2024/02/24 Prepared By: Approved By: ___________________ ______________________ Johnson Huang/Engineer Damon Hu/EMC Manager Note: This report applies to above tested sample only. This report shall not be reproduced in parts without written approval of Guangdong Dongdian Testing Service Co., Ltd. Guangdong Dongdian Testing Service Co., Ltd. Report No.: DDT-RE23110721-2E03 TRF No.: RT-4-E-02-015 FCC RF Exposure Report MPE Ver.1.1 Page 4 of 8 Revision History Rev. Revisions Issue Date Revised By --- Initial issue 2024/02/24 Guangdong Dongdian Testing Service Co., Ltd. Report No.: DDT-RE23110721-2E03 TRF No.: RT-4-E-02-015 FCC RF Exposure Report MPE Ver.1.1 Page 5 of 8 1. General Information 1.1. Description of equipment EUT Name : AM/FM/WB/AUX/USB/BT/Wired Remote Model Number : XMH400 EUT function description : Please reference user manual of this device Power Supply : DC 12V Radio Technology : Bluetooth BR/EDR Operation frequency : 2402 MHz-2480 MHz Modulation : GFSK, /4-DQPSK, 8DPSK Data Rate : Bluetooth: 1Mbps, 2Mbps, 3Mbps Antenna Type : Antenna 1: PCB antenna, Maximum PK gain: 4.05 dBi Note: EUT is the abbreviation of equipment under test. Guangdong Dongdian Testing Service Co., Ltd. Report No.: DDT-RE23110721-2E03 TRF No.: RT-4-E-02-015 FCC RF Exposure Report MPE Ver.1.1 Page 6 of 8 1.2. Assess laboratory Guangdong Dongdian Testing Service Co., Ltd. Add.: Unit 2, Building 1, No. 17, Zongbu 2nd Road, Songshan Lake Park, Dongguan, Guangdong, China, 523808 Tel.: +86-0769-38826678, http://www.dgddt.com, Email: [email protected]. CNAS Accreditation No. L6451; A2LA Accreditation Number: 3870.01 FCC Designation Number: CN1182, Test Firm Registration Number: 540522 Innovation, Science and Economic Development Canada Site Registration Number: 10288A Conformity Assessment Body identifier: CN0048 VCCI facility registration number: C-20087, T-20088, R-20123, R-20155, G-20118 Guangdong Dongdian Testing Service Co., Ltd. Report No.: DDT-RE23110721-2E03 TRF No.: RT-4-E-02-015 FCC RF Exposure Report MPE Ver.1.1 Page 7 of 8 2. RF Exposure Evaluation 2.1. Requirement Systems operating under the provisions of FCC 47 CFR section shall be operated in a manner that ensures that the public is not exposed to radio frequency energy level in excess of the Commission’s guidelines. In accordance with 47 CFR FCC Part 2 Subpart J, section 2.1091 this device has been defined as mobile device whereby a distance of 0.2 m normally can be maintained between the user and the device, and below RF Permissible Exposure limit shall comply with. Limits for General Population/Uncontrolled Exposure 2.2. Calculation method From the peak EUT RF output power, the minimum mobile separation distance, d=0.2 m, as well as the gain of the used antenna, the RF power density can be obtained. Guangdong Dongdi…

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Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE23110721-2E01 TRF No.: RT-4-E-02-001 RF test report Ver. 1.0 Page 1 of 104 FCC CERTIFICATION TEST REPORT Applicant : ASA Electronics Shenzhen Limited Address of Applicant : Room 503, 5/F., Unit A, Skyworth Building, Gaoxin Avenue.1.S., Nanshan District, Shen Zhen Manufacturer : ASA Electronics, LLC. Address of Manufacturer : 2602 Marina Drive, Elkhart, IN 46514 USA Equipment under Test : AM/FM/WB/AUX/USB/BT/Wired Remote Model No. : XMH400 FCC ID : 2AHU2XMH400 Test Standard(s) : FCC Rules and Regulations Part 15 Subpart C Report No. : DDT-RE23110721-2E01 Issue Date : 2024/02/24 Issue By : Guangdong Dongdian Testing Service Co., Ltd. Unit 2, Building 1, No. 17, Zongbu 2nd Road, Songshan Lake Park, Dongguan, Guangdong, China, 523808 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE23110721-2E01 TRF No.: RT-4-E-02-001 RF test report Ver. 1.0 Page 2 of 104 Table of Contents 1. Summary of Test Results ............................................................................................. 7 2. General Test Information .............................................................................................. 8 2.1. Description of EUT ........................................................................................................ 8 2.2. Accessories of EUT ...................................................................................................... 9 2.3. Block diagram of EUT configuration for test ................................................................. 9 2.4. Decision of final test mode ........................................................................................... 9 2.5. Deviations of test standard ......................................................................................... 10 2.6. Test environment conditions ....................................................................................... 10 2.7. Test laboratory ............................................................................................................ 10 2.8. Measurement uncertainty ........................................................................................... 11 3. Equipment Used During Conductive Test .................................................................. 12 4. 20 dB Bandwidth ......................................................................................................... 13 4.1. Block diagram of test setup ........................................................................................ 13 4.2. Limits ........................................................................................................................... 13 4.3. Test procedure ............................................................................................................ 13 4.4. Test result ................................................................................................................... 14 4.5. Test graphs ................................................................................................................. 15 5. 99% Bandwidth ........................................................................................................... 19 5.1. Block diagram of test setup ........................................................................................ 19 5.2. Limits ........................................................................................................................... 19 5.3. Test procedure ............................................................................................................ 19 5.4. Test result ................................................................................................................... 20 5.5. Test graphs ................................................................................................................. 21 6. Maximum Peak Output Power .................................................................................... 25 6.1. Block diagram of test setup ........................................................................................ 25 6.2. Limits ........................................................................................................................... 25 6.3. Test procedure ............................................................................................................ 25 6.4. Test result ................................................................................................................... 26 6.5. Test graphs ................................................................................................................. 27 7. Carrier Frequency Separation .................................................................................... 31 7.1. Block diagram of test setup ........................................................................................ 31 7.2. Limits ........................................................................................................................... 31 7.3. Test procedure ............................................................................................................ 31 7.4. Test result ................................................................................................................... 32 7.5. Test graphs ................................................................................................................. 33 8. Dwell Time .................................................................................................................. 35 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE23110721-2E01 TRF No.: RT-4-E-02-001 RF test report Ver. 1.0 Page 3 of 104 8.1. Block diagram of test setup ........................................................................................ 35 8.2. Limits ..............................................................................................................…

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Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE23110721-2E01 Page 72 of 104 13. Radiated Emission 13.1. Test equipment Equipment Manufacturer Model No. Serial Number Due Date ☒Radiation 3#Chamber EMI TEST RECEIVER R&S ESU26 100472 2024/04/22 PSA Series Spectrum Analyzer Agilent E4447A MY50180031 2024/04/22 Active Loop Antenna Schwarzbeck FMZB-1519 1519-038 2024/09/10 Trilog Broadband Antenna Schwarzbeck VULB 9163 01429 2024/07/11 Double Ridged Horn Antenna Schwarzbeck BBHA 9120 D 02468 2024/09/17 Broad Band Horn Antenna Schwarzbeck BBHA 9170 790 2024/04/25 Pre-amplifier COM-POWER PAM-118A 18040084 2024/07/14 Pre-amplifier COM-POWER PAM-840A 461369 2024/04/26 RE Cable N/A W23.02 CP1-X2 + W23.09 AP1-X8+ JCT26S-NJ-NJ- 1.5M 4.5M+8M+1.5 M 2024/04/20 RF Cable Yuhu JCTB810-NJ-NJ- 9M+ ZT26S- SMAJ-SMAJ-1M 21123964 2024/04/22 Band Reject Filter(2400-2500 MHz) REBES BRM50702 G555 N/A Test Software Tonscend JS32-RE V 5.0.0.1 N/A Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE23110721-2E01 Page 73 of 104 13.2. Block diagram of test setup In 3 m Anechoic Chamber, test setup diagram for 9 kHz- 30 MHz: In 3 m Anechoic Chamber, test setup diagram for 30 MHz - 1 GHz: Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE23110721-2E01 Page 74 of 104 In 3 m Anechoic Chamber, test setup diagram for frequency above 1 GHz: 13.3. Limits (1) FCC 15.205 Restricted frequency band MHz MHz MHz GHz 0.090-0.110 16.42-16.423 399.9-410 4.5-5.15 1 0.495-0.505 16.69475-16.69525 608-614 5.35-5.46 2.1735-2.1905 16.80425-16.80475 960-1240 7.25-7.75 4.125-4.128 25.5-25.67 1300-1427 8.025-8.5 4.1772&4.17775 37.5-38.25 1435-1626.5 9.0-9.2 4.2072&4.20775 73-74.6 1645.5-1646.5 9.3-9.5 6.215-6.218 74.8-75.2 1660-1710 10.6-12.7 6.26775-6.26825 108-121.94 1718.8-1722.2 13.25-13.4 6.31175-6.31225 123-138 2200-2300 14.47-14.5 8.291-8.294 149.9-150.05 2310-2390 15.35-16.2 8.362-8.366 156.52475-156.52525 2483.5-2500 17.7-21.4 8.37625-8.38675 156.7-156.9 2690-2900 22.01-23.12 8.41425-8.41475 162.0125-167.17 3260-3267 23.6-24.0 12.29-12.293 167.72-173.2 3332-3339 31.2-31.8 12.51975-12.52025 240-285 3345.8-3358 36.43-36.5 12.57675-12.57725 322-335.4 3600-4400 ( 2 ) 13.36-13.41 1Until February 1, 1999, this restricted band shall be 0.490-0.510 MHz 2Above 38.6 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE23110721-2E01 Page 75 of 104 RSS-Gen section 8.10 Restricted frequency bands* MHz MHz MHz GHz 0.090-0.110 12.51975-12.52025 240-285 3.5-4.4 0.495-0.505 12.57675-12.57725 322-335.4 4.5-5.15 2.1735-2.1905 13.36-13.41 399.9-410 5.35-5.46 3.020-3.026 16.42-16.423 608-614 7.25-7.75 4.125-4.128 16.69475-16.69525 960-1427 8.025-8.5 4.1772&4.17775 16.80425-16.80475 1435-1626.5 9.0-9.2 4.2072&4.20775 25.5-25.67 1645.5-1646.5 9.3-9.5 5.677-5.683 37.5-38.25 1660-1710 10.6-12.7 6.215-6.218 73-74.6 1718.8-1722.2 13.25-13.4 6.26775-6.26825 74.8-75.2 2200-2300 14.47-14.5 6.31175-6.31225 108-138 2310-2390 15.35-16.2 8.291-8.294 149.9-150.05 2483.5-2500 17.7-21.4 8.362-8.366 156.52475-156.52525 2655-2900 22.01-23.12 8.37625-8.38675 156.7-156.9 3260-3267 23.6-24.0 8.41425-8.41475 162.0125-167.17 3332-3339 31.2-31.8 12.29-12.293 167.72-173.2 3345.8-3358 36.43-36.5 Above 38.6 * Certain frequency bands listed in table and in bands above 38.6 GHz are designated for licence- exempt applications. These frequency bands and the requirements that apply to related devices are set out in the 200 and 300 series of RSSs. (2) FCC 15.209 Limit & RSS-Gen section 8.9 Limit FREQUENCY MHz DISTANCE Meters FIELD STRENGTHS LIMIT mV/m dB(mV)/m 0.009 ~ 0.490 300 2400/F(kHz) 67.6-20log(F) 0.490 ~ 1.705 30 24000/F(kHz) 87.6-20log(F) 1.705 ~ 30.0 30 30 29.54 30 ~ 88 3 100 40.0 88 ~ 216 3 150 43.5 216 ~ 960 3 200 46.0 960 ~ 1000 3 500 54.0 Above 1000 3 74.0 dB(mV)/m (Peak) 54.0 dB(mV)/m (Average) Note: (1) The emission limits shown in the above table are based on measurements employing a CISPR QP detector except for the frequency bands 9 - 90 kHz, 110 - 490 kHz and above 1000 MHz, radiated emissions limits in these three bands are based on measurements employing an average detector. Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE23110721-2E01 Page 76 of 104 (2) At frequencies below 30 MHz, measurement may be performed at a distance closer than that specified, and the limit at closer measurement distance can be extrapolated by below formula: Limit 3m (dBuV/m)= Limit 30m (dBuV/m) + 40Log(30m/3m) (3) Limit for this EUT The emissions appearing within 15.205 restricted frequency bands shall not exceed the limits shown in 15.209, and the emissions appearing within RSS-Gen section 8.10 Restricted frequency bands shall not exceed the limits shown in RSS-Gen section 8.9, all the other emissions shall be at least 20 dB below the fundamental emissions or comply with 15.209 limits and RSS-Gen section 8.9 limits. 13.4. Assistant equipment used for test Assistant equipment Manufacturer Model number Description other / / / / / 13.5. Test procedure (1) EUT was placed on a non-metallic table, 80 cm above the ground plane inside a semi-anechoic chamber for below 1G and 150 cm above the ground plane inside a fully-anechoic chamber for above 1G. (2) Test antenna was located 3 m from the EUT on an adjustable mast, and the antenna used as below table. Test frequency range Test antenna used Test antenna distance 9 kHz - 30 MHz Active Loop antenna 3 m 30 MHz - 1 GHz Trilog Broadband Antenna 3 m 1 GHz - 18 GHz Double Ridged Horn Antenna(1 GHz-18 GHz) 3 m 18 GHz - 40 GHz Horn Antenna(18 GHz-40 GHz) 1 m According ANSI C63.10:2013 clause 6.4.6 and 6.5.3, for measurements below 30 MHz, Antenna was located 3 m from EUT, the loop antenna was positioned in three antenna orientations (parallel, perpendicular, and round-parallel), for each measurement antenna alignment, the EUT shall be rotated through 0°to 360°on a turntable, and the lowest height of the magnetic antenna shall be 1 m above the ground. For measurement above 30MHz, the trilog Broadband…

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Shina Industries (China) Ltd. 1#, Huifengxisi Road, Zhongkai Hi-Tech Development Zone, Huizhou City, Guangdong Province, China. 信華精機有限公司 廣東省惠州市仲愷高新區惠風西四路一號.