FCC ID: 2AEGO4020WM WIFI Module

User Guide CDW-G4822BU-01 WiFi Module It is recommended that you read this Guide carefully before using the printer WiFi Module CDW-G4822BU-01 1. Overview The CDW-G4822BU-01 is based on RTL8822BU-CG, that support 2-stream 802.11ac solutions with Multi-user MIMO (Multiple-Input, Multiple-Output) with Wireless LAN (WLAN) USB2.0 network interface controller. It combines a WLAN MAC, a 2T2R capable WLAN baseband, and RF in s single chip. The CDW-G4822BU-01 provides a complete solution for a high-performance integrated wireless . 2. Features IEEE 802.11a/b/g/n/ac compatible WLAN 5MHz / 10MHz / 20MHz / 40MHz / 80MHz bandwidth transmission Complies with USB2.0 for WLAN controller Dual-band 2T2R mode with data rate up to 867Mbps Support 802.11ac 2x2,Wave-2 compliant with MU-MIMO Complete 802.11n MIMO solution for 2.4GHz and 5Ghz band Maximum PHY data rate up to 173.3 Mbps using 20MHz bandwidth, 400Mbps using 40MHz bandwidth, and 866.7Mbps using 80MHz bandwidth DSSS with DBPSK and DQPSK, CCK modulation with long and short preamble, OFDM with BPSK, QPSK, 16QAM,64QAM and 256QAM modulation. Convolutional Coding Rate: 1/2, 2/3, 3/4,and 5/6 Support STBC, Support LDPC Build-in both 2.4GHz and 5GHz PA, Build-in both 2.4GHz and 5GHz LNA Enhanced WLAN Coexistence Control to improve transmission quality in different profiles Page 2 3. Precautions Pantum Regulatory Type/Model Number CDW-G4822BU-01; FCC ID:2AEGO4020WM 5G band I (5150-5350MHz) indoor use only. 5.Hereby, [Zhuhai Pantum Electronics Co., Ltd.] declares that the radio equipment type [CDW-

G4822BU-01] is in compliance with Directive 2014/53/EU. The full text of the EU declaration of conformity is available at the following internet address: www.http:WWW.PANTUM.COM FCC regulatory compliance statement 15.19 Statement This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:

(1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. 15.21 Information to user Warning: changes or modifications not expressly approved by the party responsible for compliance could void the users authority to operate the equipment. List of applicable FCC rules:

47 CFR Part 15, Subpart C 15.203 47 CFR Part 15, Subpart C 15.205 47 CFR Part 15, Subpart C 15.207 47 CFR Part 15, Subpart C 15.209 47 CFR Part 15, Subpart C 15.247 47 CFR Part 15, Subpart E 15.407 47 CFR Part 2 2.1091 Limited module procedures This module is not a limited module. Trace antenna designs The antenna is not a trace antenna. Summarize the specific operational use conditions This module can be used in IOT devices, the input voltage to the module is nominally 5V. Only the embedded integral antenna is allowed. Any other external antenna is prohibited. RF exposure considerations This Module complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with a minimum distance of 20cm between the radiator and your body. This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter. Antennas If you desire to increase antenna gain and either change antenna type or use same antenna type certified, a Class II permissive change application is required to be filed by us, or you (host manufacturer) can take responsibility through the change in FCC ID (new application) procedure followed by a Class II permissive change application. Label and compliance information Please notice that if the FCC identification number is not visible when the module is installed inside another device, then the outside of the device into which the module is installed must also display a label referring to the enclosed module. following: Contains FCC ID: 2AEGO4020WM any similar wording that expresses the same meaning may be used. 15.19 Labelling requirements shall be complied on end user device. Labelling rules for special device, please refer to 2.925, 15.19 (a)(5) and relevant KDB publications. For E-label, please refer to 2.935. Information on test modes and additional testing requirements The OEM integrator is responsible for ensuring that the end-user has no manual instruction to remove or install module. The module is limited to installation in mobile application, a separate approval is required for all other operating configurations, including portable configurations with respect to 2.1093 and difference antenna configurations. Additional testing, Part 15 Subpart B disclaimer This modular transmitter is only FCC authorized for the specific rule parts listed on our grant, host product manufacturer is responsible for compliance to any other FCC rules that apply to the host not covered by the modular transmitter grant of certification. Host manufacturer in any case shall ensure host product which is installed and operating with the module is in compliant with Part 15B requirements. Please note that For a Class B or Class A digital device or peripheral, the instructions furnished the user manual of the end-user product shall include statement set out in. 15.105 Information to the user or such similar statement and place it in a prominent location in the text of host product manual. Original texts as following:

For Class B Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

Reorient or relocate the receiving antenna. Increase the separation between the equipment and receiver. Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. Consult the dealer or an experienced radio/TV technician for help. 4. FrequencyBand:

Frequency Band:

WiFi 2.4GHz:

2412MHz - 2462MHz WiFi 5GHz:

5180MHz - 5320MHz, 5500MHz - 5700MHz WiFi 5.8GHz:

5745MHz - 5825MHz maximum output power : (Declaration for EU Compliance) Radio Frequency Output Power WLAN 2.4GHz 2412-2462MHz 18.58 dBm EIRP WLAN 5GHz 5180-5320MHz 5500-5700MHz 20.48 dBm EIRP 21.73 dBm EIRP WLAN 5.8GHz 5745-5825MHz 13.58 dBm EIRP WiFi Module CDW-G4822BU-01 3. General Specification Model Product Name Major Chipset Standard CDW-G4822BU-01 WIFi 11a/b/g/n/ac 2T2R Realtek RTL8822BU-CG IEEE 802.11a/b/g/n/ac Data Transfer Rate 1,2,5.5,6,11,12,18,22,24,30,36,48,54,60, 90,120 and maximum of 867Mbps Modulation Method Frequency Band CCK//DBPSK/DQPSK/QPSK/16-QAM/ 64-QAM/256QAM 2412MHz - 2462MHz, 5180MHz - 5320MHz, 5500MHz -5700MHz,5745MHz - 5825MHz IEEE 802.11b: DSSS (Direct Sequence Spread Spectrum) IEEE802.11a/g/n/ac: OFDM (Orthogonal rthogonal Frequency Division Multiplexing) Operation Mode Ad hoc, Infrastructure Spread Spectrum Antenna gain Security Interface 2 dBi USB 2.0 WEP, TKIP, AES, WPA, WPA2 Operating Temperature

-20~ +70 C ambient temperature Storage Temperature

-40 ~ 85C ambient temperature Humidity Dimension 5 to 90 %

maximum (non-condensing) 46.5x40x7.6mm (LxWxH)0.2mm 4. DC Characteristics Symbol Parameter VD33 VD10 VIH VIL VOH VOL 3.3V I/O supply Voltage 1.05V Core Supply Voltage Input high Voltage Input low Voltage output high Voltage output low Voltage Min. 3.0 0.945 2.0

2.97 0 Typ. 3.3 1.05 3.3 0

Max 3.6 1.155 3.6 0.9 3.3 0.33 Units V V V V V V Page 3 5. Dimension & Pin Assignments WiFi Module CDW-G4822BU-01 46.50 R2.00 R2.00 40.00 32.90 6 N I P 1 N I P 3.60 19.00 6.40 6.60 1.60 7.60 NO Name Type Description Power supply 5V is requiredMAX 5.5V UV+

USB_DM USB_DP GND 1 2 3 4 5 6 I/O USB data-

I/O USB data+

Ground connections

I I BT_REG_ON GPIO Control BT device enabled ON/OFF Control EN of DC-DC,High level (default) 6. Key material list Type Crystal WIFI IC P/N 40Mhz RTL8822BU PCBA VER 63822BU G4822BU A,O,S supplier JWT FK , SFJ RTL JWT 40MHz 3225 FK 40MHz 3225 SFJ 40MHz 3225 Page 4 7. Modular photo WiFi Module CDW-G4822BU-01 TOP VIEW BOTTOM VIEW Dimension 46.5x40x7.6mm (LxWxH)0.2mm 8. Electrical Characteristics 7.1 WiFi Section:

2.4GHz RF Specification Feature Description WLAN Standard IEEE 802.11a/b/g/n/ac WiFi compliant Frequency Range 2.400 GHz ~ 2.497GHz (2.4 GHz ISM Band) Number of Channels CH1-CH11(America, Canda),CH1-CH13(Europe,China),CH1-CH14(Japan) 802.11b : DQPSK, DBPSK, CCK 802.11 g/n : OFDM /64-QAM,16-QAM, QPSK, BPSK Modulation Receive Sensitivity (11b,20MHz) 1Mbps 2Mbps PER @ -93 dBm, typical PER @ -91 dBm, typical

@8% PER 5.5Mbps PER @ -88 dBm, typical Receive Sensitivity (11g,20MHz) 11Mbps PER @ -86 dBm, typical 6Mbps 9Mbps PER @ -90 dBm, typical PER @ -89 dBm, typical

@10% PER 12Mbps PER @ -88 dBm, typical

Page 5 WiFi Module CDW-G4822BU-01

18Mbps 24Mbps 36Mbps 48Mbps 54Mbps PER @ -85 dBm, typical PER @ -82 dBm, typical PER @ -79 dBm, typical PER @ -74 dBm, typical PER @ -72 dBm, typical

- MCS=0 PER @ -90 dBm, typical

- MCS=1 PER @ -87 dBm, typical

- MCS=2 PER @ -85 dBm, typical

- MCS=3 PER @ -81 dBm, typical

- MCS=4 PER @ -78 dBm, typical

- MCS=5 PER @ -73 dBm, typical

- MCS=6 PER @ -72 dBm, typical

- MCS=7 PER @ -70 dBm, typical

- MCS=3 PER @ -79 dBm, typical

- MCS=4 PER @ -75 dBm, typical

- MCS=5 PER @ -71 dBm, typical

- MCS=6 PER @ -69 dBm, typical

- MCS=7 PER @ -68 dBm, typical Receive Sensitivity (11n,20MHz)

@10% PER Receive

- MCS=0 PER @ -87 dBm, typical Sensitivity (11n,40MHz)

- MCS=1 PER @ -84 dBm, typical

@10% PER

- MCS=2 PER @ -82 dBm, typical Maximum Input Level 802.11b : -10 dBm 802.11g/n : -20 dBm 7.2 5GHz RF Specification Feature Description WLAN Standard Frequency Range Number of Channels IEEE 802.11a/n/ac 2x2, WiFi compliant 5.15GHz ~ 5.35GHz 5.725GHz ~ 5.85GHz 5.0GHzPlease see the table Modulation 802.11a : OFDM /64-QAM,16-QAM, QPSK, BPSK 802.11n : OFDM /64-QAM,16-QAM, QPSK, BPSK 802.11ac : OFDM /256-QAM

6Mbps PER @ -89 dBm, typical Page 6 Receive Sensitivity

- MCS=3 PER @ -81 dBm, typical

(11n,20MHz) @10% PER

- MCS=4 PER @ -77 dBm, typical Receive Sensitivity

- MCS=3 PER @ -78 dBm, typical

(11n,40MHz) @10% PER

- MCS=4 PER @ -74 dBm, typical 9Mbps PER @ -88 dBm, typical

12Mbps 18Mbps 24Mbps 36Mbps 48Mbps 54Mbps PER @ -87 dBm, typical PER @ -84 dBm, typical PER @ -81 dBm, typical PER @ -78 dBm, typical PER @ -73 dBm, typical PER @ -72 dBm, typical

- MCS=0 PER @ -89 dBm, typical

- MCS=1 PER @ -86 dBm, typical

- MCS=2 PER @ -84 dBm, typical

- MCS=5 PER @ -72 dBm, typical

- MCS=6 PER @ -71 dBm, typical

- MCS=7 PER @ -68 dBm, typical

- MCS=0 PER @ -86 dBm, typical

- MCS=1 PER @ -83 dBm, typical

- MCS=2 PER @ -81 dBm, typical

- MCS=5 PER @ -70 dBm, typical

- MCS=6 PER @ -68 dBm, typical

- MCS=7 PER @ -67 dBm, typical

- MCS=0, NSS1 PER @ -87 dBm, typical

- MCS=1, NSS1 PER @ -85 dBm, typical

- MCS=2, NSS1 PER @ -83 dBm, typical

- MCS=3, NSS1 PER @ -80 dBm, typical

- MCS=4, NSS1 PER @ -76 dBm, typical

- MCS=5, NSS1 PER @ -71 dBm, typical

- MCS=6, NSS1 PER @ -70 dBm, typical

- MCS=7, NSS1 PER @ -69 dBm, typical

- MCS=8, NSS1 PER @ -65 dBm, typical

- MCS=0, NSS1 PER @ -85 dBm, typical

- MCS=1, NSS1 PER @ -82 dBm, typical

- MCS=2, NSS1 PER @ -80 dBm, typical

- MCS=3, NSS1 PER @ -77 dBm, typical Receive Sensitivity

(11ac,20MHz) @10% PER WiFi Module CDW-G4822BU-01 Page 7 WiFi Module CDW-G4822BU-01

- MCS=4, NSS1 PER @ -74 dBm, typical

- MCS=5, NSS1 PER @ -69 dBm, typical

- MCS=6, NSS1 PER @ -68 dBm, typical

- MCS=7, NSS1 PER @ -67 dBm, typical

- MCS=8, NSS1 PER @ -62 dBm, typical

- MCS=9, NSS1 PER @ -58 dBm, typical

- MCS=0, NSS1 PER @ -82 dBm, typical

- MCS=1, NSS1 PER @ -79 dBm, typical

- MCS=2, NSS1 PER @ -77 dBm, typical

- MCS=3, NSS1 PER @ -73 dBm, typical

- MCS=6, NSS1 PER @ -65 dBm, typical

- MCS=7, NSS1 PER @ -63 dBm, typical

- MCS=8, NSS1 PER @ -59 dBm, typical

- MCS=9, NSS1 PER @ -55 dBm, typical Receive Sensitivity

- MCS=4, NSS1 PER @ -70 dBm, typical

(11ac,80MHz) @10% PER

- MCS=5, NSS1 PER @ -67 dBm, typical Maximum Input Level 802.11a/n/ac : -20 dBm Page 8 WiFi Module CDW-G4822BU-01 9. Packing information WiFi module clapboard A12: 420*335mm Pearl cotton: 420*335*45mm 126PCS/laye Red antistatic pearl cotton 1008pcs/8 layer Red antistatic plastic bag Desiccant 50g Paper corner/4pcs Outer box K=A435*350*415mm 1008pcs/BOX Loading the outer box Pearl cotton Antistatic test 4pcs paper protector ESD CAUTION The CDW-G4822BU-01 is ESD (electrostatic discharge) sensitive device and may be damaged with ESD or spike voltage. Although CDW-G4822BU-01 is with built-in ESD protection circuitry, please handle with care to avoid the permanent malfunction or the performance degradation. Page 9 Connector SPE WiFi Module CDW-G4822BU-01 Page 10

WIFI module CDW-G4822BU-01 5.8GHz/5.1GHz/2.4GHz CMIIT ID:2020AP8438 FCC ID:2AEGO4020WM Zhuhai PANTUM Electronics Co., Ltd. Made in China Loaction

Zhuhai Pantum Electronics Co., Ltd To:

Federal Communications Commission Office of Engineering and Technology Laboratory Division 7435 Oakland Mills Rd. Columbia MD 21046 From: Zhuhai Pantum Electronics Co., Ltd Date: 2020-12-17 Regarding:

Confidentiality Request regarding application for FCC ID: 2AEGO4020WM LONG TERM CONFIDENTIALITY Pursuant to 47 CFR Section 0.459 and 0.457 of the commissions rules, the applicant hereby requests confidential treatment of the documents listed below, associated with the certification application referenced above. Schematic(s) Block Diagrams Operational Descriptions The documents above contain proprietary information not released to the public. Public disclosure of this information may prove harmful to the business of the applicant. Print Name: Emma Li Title: Certification Engineer Signature:

On behalf of Company: Zhuhai Pantum Electronics Co., Ltd Telephone: 86-18666978959 E-mail: emma.li@pantum.com

SGS North America Inc. 620 Old Peachtree Road SUITE 100 Suwanee, Georgia 30024 United States Applicant Declaration Applicant Legal Business Name Zhuhai Pantum Electronics Co., Ltd Area A, 3rd floor, Building No.1, No.3883, Zhuhai Avenue, Zhuhai, 519060 Guangdong, China Address Grantee Code FCC ID Contact Email Contact Phone Authorized Contact Name Emma Li 2AEGO 2AEGO4020WM emma.li@pantum.com 86-18666978959 a) b) c) d) e) I, the undersigned, certify that I am an authorized signatory for the Applicant and therefore declare;

in accordance with 47CFR2.911(d), all of the statements herein and the exhibits attached hereto are true and correct to the best of my knowledge and belief. in accepting a Grant of Equipment Authorization issued by a TCB, under the authority of the FCC, as a result of the representations made in this application, the Applicant is responsible for:

(1)

(2)

(3) labeling the equipment with the exact FCC ID as specified in this application, compliance statement labeling pursuant to the applicable rules, compliance of the equipment with the applicable technical rules, if the Applicant is not the actual manufacturer of the equipment, appropriate arrangements have been made with the manufacturer to ensure that production units of this equipment will continue to comply with the FCCs technical requirements. in accordance with 47 CFR 2.909 and KDB394321, the Applicant has read, understood and agrees to accept that they are the responsible party and agree to abide by their responsibilities as specified under 47 CFR 2.909 and KDB394321. in accordance with ISO17065, FCC KDB641163, FCC KDB610077, KDB394321 and RSP-100, the Applicant has read, understood, accepts and agrees to abide by the post market surveillance requirements.

(1)

(2)

(3) the Applicant understands, accepts and agrees that a sample may be requested for surveillance testing. the Applicant shall make provisions to always have a production sample available upon request by SGS, FCC and/or ISED. the Applicant shall, upon request by SGS, at the Applicants expense, provide a production sample of the requested product to SGS, FCC and/or ISED as instructed. The sample shall include all support devices, cables, software, accessories or other hardware or software required for evaluation, review, certification and audit surveillance of products certified by SGS. f) neither the Applicant nor any party to the application is subject to a denial of Federal benefits, that includes 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 47CFR 1.2002(b) for the definition of a party for these purposes. g) the Applicant has read, understood, accepts and agrees to abide by the SGS North America, Inc.(TCB) terms and conditions. Link to CFRs: https://www.fcc.gov/wireless/bureau-divisions/technologies-systems-and-innovation-division/rules-regulations-title-47 Link to KDBs: https://apps.fcc.gov/oetcf/kdb/index.cfm Link to RSP-100: https://www.ic.gc.ca/eic/site/smt-gst.nsf/eng/sf01130.html Applicant Signature:

Date: 2020-12-17 Print Name:

Emma Li Title:

Certification Engineer

*NOTE: This declaration cannot be signed by an Agent, it shall be signed by an authorized person listed in the FCC database Applicant Declaration Rev:0.0 SGS North America Inc. 620 Old Peachtree Road SUITE 100 Suwanee, Georgia 30024 United States Applicant Declaration Applicant Declaration Rev:0.0

Zhuhai Pantum Electronics Co., Ltd TO:

Federal Communication Commission Equipment Authorization Branch 7435 Oakland Mills Road Columbia, MID 21046 Regarding: FCC ID: 2AEGO4020WM To whom it may concern:

Date: 2020-12-17 We, the undersigned, hereby authorize SGS-CSTC Standards Technical Services Co., Ltd. (SGS) Shenzhen Branch and Keny Xu in SGS-CSTC Standards Technical Services Co., Ltd. (SGS) Shenzhen Branch to act on our behalf in all manners relating to application for equipment authorization with respect to the FCC ID above, including signing of all documents relating to these matters. Any and all acts carried out by the agent on our behalf shall have the same effect as acts of our own. We, the undersigned, hereby certify that we are not subject to a denial of federal benefits, that includes FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C. 853(a). Where our 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 SGS North America, Inc., still resides with Zhuhai Pantum Electronics Co., Ltd This authorization is valid until further written notice from the applicant. Print Name: Emma Li Title: Certification Engineer Signature:

On behalf of Company: Zhuhai Pantum Electronics Co., Ltd Telephone: 86-18666978959 E-mail: emma.li@pantum.com

Zhuhai Pantum Electronics Co., Ltd Modular Approval Request Letter FCC ID: 2AEGO4020WM Dear Examiner, Theres a Wi-Fi module that would like to have your authorization as a modular approval. The specific product as below, Monochrome Laser Printer with its designed features and specified description, meets special requirements for Limited Single Modular Approval on FCC KDB996369 by cross-reference list below. Single, 1. 2. 3. 4. 5. 6. 7. Requirement of FCC KDB996369 The modular transmitter must have its own RF shielding. The modular transmitter must have buffered modulation/data inputs (if such inputs are provided) to ensure that the module will comply with Part 15 requirements under conditions of excessive data rates or over-modulation. The modular transmitter must have its own power supply regulation. The modular transmitter must comply with the antenna and transmission system requirements of Sections 15.203, 15.204(b) and 15.204(c). The antenna must either be permanently attached or employ a unique antenna coupler (at all connections between the module and the antenna, including the cable). The professional installation provision of Section 15.203 is not applicable to modules but can apply to limited modular approvals under paragraph (b) of this section. The modular transmitter must be tested in a stand-

alone configuration, i.e., the module must not be inside another device during testing. The modular transmitter must be labeled with its own FCC ID number, and, if the FCC ID is not visible when the module is installed inside another device, then the outside of the device into which the module is installed must also display a label referring to the enclosed module. The modular transmitter must comply with any specific rule or operating requirements applicable to the transmitter and the manufacturer must provide adequate instructions along with the module to Comply (Y/N) Y The EUT provides the RF shielding. See EUT photo. Y The EUT has its buffered modulation. Please see the Schematic Diagram. Y The EUT has its own power supply regulation, please see the Schematic Diagram. Y The EUT meets the FCC antenna requirements; unique antenna connector and photo of antenna are shown in the test report. Y The EUT was tested with a test board, please see test report and setup photo Y Please see exhibition label sample for the FCC ID of this module. Also in the exhibition Users manual, there are instructions give to the OEM on how to label the end product. Y The EUT is compliant with all applicable FCC rules. Details instructions for Zhuhai Pantum Electronics Co., Ltd maintaining compliance are give in the User Manual. Y The EUT complies with RF exposure requirement. 8. explain any such requirements. A copy of these instructions must be included in the application for equipment authorization. The modular transmitter must comply with any applicable RF exposure requirements. For example, FCC Rules in Sections 2.1091, 2.1093 and specific Sections of Part 15, including 15.319(i),15.407(f),15.253(f)and15.255(g), require that Unlicensed PCS, UNII and millimeter wave device performing routine environmental evaluation for RF Exposure to demonstrate compliance. In addition, spread spectrum Transmitters operating under Section 15.247 are required to address RF Exposure compliance in accordance with Section 15.247(b)(4). Sincerely, Signature:

Print Name: Emma Li Title: Certification Engineer On behalf of Company: Zhuhai Pantum Electronics Co., Ltd Telephone: 86-18666978959 E-mail: emma.li@pantum.com

Channel Statement We, Zhuhai Pantum Electronics Co., Ltd. declare that this EUT

(FCC ID: 2AEGO4020WM) doesnt have ad Hoc Mode function on non-US/Canada frequencies. In addition, the frequency selection feature is disabled by firmware for devices marketed to the US/ Canada. For DTS part of this device, only channels 1-11 will be used in North America. Country code selection is disabled. Should you have any questions or comments regarding this matter, Please have my best attention. Sincerely, Signature:

Print Name: Emma Li Title: Certification Engineer On behalf of Company: Zhuhai Pantum Electronics Co., Ltd Telephone: 86-18666978959 E-mail: emma.li@pantum.com