What walsun does

Shenzhen Walsun Technology Co., Ltd. (operating as Walsun, Walsun Optics, and Huaxun Optocomm) is a Shenzhen-headquartered designer and manufacturer of high-speed optical transceiver modules founded in 2013. The company builds a comprehensive product portfolio spanning data rates from 1G to 800G across form factors including SFP, SFP+, SFP28, QSFP+, QSFP28, QSFP-DD, and OSFP. Underlying technologies include PAM4 modulation, silicon photonics (SiPh) integration, CWDM/DWDM wavelength division multiplexing, BIDI single-fiber transmission, and tunable laser platforms, with proprietary optical engine IP, advanced packaging processes, and automated testing infrastructure that the company positions as vertically integrated. The portfolio is organized into Transmission (telecom/datacom interconnect), Datacom (data center interconnects), and Storage (16G–128G Fibre Channel) categories, with flagship 400G and 800G families (QSFP-DD and OSFP, DR/FR/LR/ER/SR variants) targeted at hyperscale data centers, AI/ML compute clusters, cloud providers, 5G carrier networks, HPC, and enterprise storage environments.

Walsun runs a B2B sales-led go-to-market. Pricing is quote-based rather than publicly listed, and revenue is generated through direct sales ([email protected], contact form), an e-commerce storefront branded as Walsun Mall, and on-floor sales at major industry exhibitions (OFC, CIOE, CommunicAsia). The company offers customized design services to meet customer-specific requirements, implying a project/spec-in motion alongside volume manufacturing. Marketing is concentrated in industry trade shows, technical content/knowledge-base publishing, newsletter capture, and social media on Facebook, LinkedIn, and WeChat. The company operates a single manufacturing and headquarters facility in Baoan District, Shenzhen (relocated June 2020 to support business expansion), and claims global reach serving mainstream data centers, communication equipment manufacturers, and cloud service providers both domestically and internationally. Revenue figures are not publicly disclosed, there are no reported funding rounds, and no management team or named customer logos are available in the source material.

Name

walsun

Legal name

Shenzhen Walsun Technology Co., Ltd.

Website

https://walsun.com

Company type

Private

Founded year

2013

Operating status

Operating

Short description

Shenzhen-based designer and manufacturer of high-speed optical transceivers (1G to 800G) in QSFP-DD, OSFP, QSFP28, SFP28, and related form factors, serving hyperscale data centers, AI/ML compute clusters, telecom carriers, cloud providers, and storage networks via direct sales and customized designs.

Ownership category

akta.pro rank

Product category

Optical Transceivers

NAICS

Other Communications Equipment Manufacturing (33429), Communications Equipment Manufacturing (3342), Other Communications Equipment Manufacturing (334290)

SIC

Computer Communications Equipment (3576), Communications Equipment, Nec (3669)

akta.pro primary industry

Optical Transceivers (SFP/SFP+/SFP28/QSFP/QSFP-DD/OSFP) (HDAFAEAE)

akta.pro secondary industries

Optoelectronic Receivers & Transceivers (Photodetectors/Optical Modules) (HDAHALAM), WDM Line Systems (ROADM/OADM/Amplifiers) (HDAFADAA), Active Optical Cables (AOC) & Optical Interconnects (HDAFAEAG)

Keywords

• Optical transceivers
• High-speed optical modules
• Data center interconnect
• Fiber optic communication
• 5G optical networking

Headquarters

HQ city

Shenzhen

HQ country

China

HQ region

Asia

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Operations, Suply Chain, Personnel, Technology or R&D, Marketing or Sales, Infrastructure

Revenue model

1. Optical Transceiver Module Sales: Direct sale of high-speed optical transceiver modules including 800G, 400G, 100G, 40G, 25G, and 10G variants. Products are sold with customized design options and mass production capabilities. Revenue is generated through product sales to data centers, telecom operators, and communication equipment manufacturers.

Pricing tiers

Go-to-market motion1 record

Distribution channels3 records

Marketing channels6 records

Core offering

Walsun designs, develops, and manufactures high-speed optical transceiver modules for optical communication, spanning 1G to 800G speeds across form factors such as QSFP-DD, OSFP, QSFP28, QSFP+, SFP28, SFP+, and SFP. The company provides customized design services and mass production capabilities for data center, telecom, and storage network applications.

Product overview

Walsun is a manufacturer of integrated solutions for high-speed optical transceiver modules. The product portfolio is organized into three main categories: Transmission (optical modules for telecom and network infrastructure), Datacom (data center interconnects), and Storage (Fibre Channel transceivers for SAN). The Transmission lineup spans from 1G to 800G speeds across multiple form factors (SFP, SFP+, QSFP+, QSFP28, QSFP-DD, OSFP) supporting DWDM, CWDM, BIDI, and tunable wavelength options. The 800G and 400G series represent the latest high-speed products for AI computing centers and hyperscale data centers, while the 100G/40G/25G/10G/1G series provide mature solutions for various transmission distances from 300m to 160km. Storage products cover 16G to 128G Fibre Channel applications for enterprise storage networks. All products support commercial and industrial temperature ranges with low power consumption and EMI design.

Differentiator

Problem solved

Functional benefit

Quantifiable outcome

• 400G platforms enable 4x increase in switching bandwidth compared to 100G systems (from 3.2-3.6T to 12.8-14.4T per RU)
• +3 more outcomes

Segments4 records

Ideal customer profiles3 records

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature6 records

Partnerships

One partnership is on record.

• CFOL (China Fiber Optic Online)minorOthers · 6 August 2021Walsun Optics joined CFOL members in August 2021. CFOL (China Fiber Optic Online) is an optical communication industry online platform. Membership enables Walsun to participate in more market activities and industry collaboration within the Chinese optical communication ecosystem.

Scale indicators3 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Innolight Technology: Suzhou-based leading Chinese manufacturer of high-speed optical transceivers including 400G and 800G modules for hyperscale data centers and AI clusters. Most direct comparable given overlapping product portfolio (QSFP-DD, OSFP, QSFP28) and customer overlap with global hyperscalers and switch OEMs.
• Eoptolink Technology: Chengdu-based Chinese optical transceiver manufacturer offering a comparable 10G to 800G product range across QSFP-DD, OSFP, and SFP form factors. Direct competitor in both telecom transmission and data center segments with similar customization capabilities.
• Hisense Broadband: Qingdao-based Chinese manufacturer of optical modules and PON components serving telecom operators and data center customers. Directly comparable across transmission product lines including 10G/25G/100G/400G/800G speeds.
• Source Photonics: Los Angeles-headquartered (with significant China manufacturing) optical transceiver vendor serving telecom and data center markets. Overlaps with Walsun across 100G/400G/800G product portfolio and shares similar hyperscaler and OEM customer base.
• Accelink Technologies: Wuhan-based Chinese manufacturer of optical components and transceivers with broad portfolio across telecom and datacom segments. Comparable on transmission product breadth and Chinese manufacturing footprint.
• HG Genuine (formerly Genuine Optics): China-based manufacturer of compatible optical transceivers focused on third-party/replacement modules for major OEM platforms (Cisco, Juniper, HP, Arista). Direct overlap with Walsun's OEM-compatible product strategy.

Broad incumbents

• Coherent Corp: US-headquartered vertically integrated photonics incumbent (formerly II-VI/Finisar) offering optical transceivers, lasers, and components. Larger-scale broad competitor serving similar hyperscaler, telecom, and OEM customers but with much wider portfolio including semiconductor lasers.
• Lumentum Holdings: US-headquartered photonic components and laser manufacturer with significant presence in optical networking for datacom and telecom. Incumbent peer overlapping in DWDM and high-speed transceiver categories with deeper vertical integration.
• Broadcom: US semiconductor and infrastructure software giant with optical component and DSP business. Its DSP chips power many 800G transceivers (including Walsun's 800G OSFP SR8 per Broadcom DSP reference), and it competes indirectly through vertically integrated optical offerings.
• Cisco Systems: Global networking incumbent whose switch/router platforms consume high volumes of optical transceivers including from Walsun. While not a direct module competitor, Cisco sets compatibility standards and represents the OEM customer ecosystem Walsun targets.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights6 records

Customer concentration

• Facebookfacebook.com/profile.php?id=100081489747530
• LinkedInlinkedin.com/company/shenzhen-walsun-optics-technology-co-ltd

Revenue estimate

Valuation estimate

Number of profiles

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about walsun