2003
Founded in Shanghai
The predecessor company established its electronics business and customer base.
Two decades ofdiscrete semiconductor manufacturing.
X-Semi is the international brand of Xirun Enterprise Group, bringing together device development, automated manufacturing, quality control, and global customer support.
2003
Established
Founded in Shanghai
2
Production factories
Independent manufacturing operations
55,000 m²
Combined facilities
Modern production and cleanroom space
550+
Team members
Engineering, quality, and operations
Rooted in China. Built for long-term manufacturing partnerships.
Xirun Enterprise Group began as Shanghai Zhirun Electronic Equipment Co., Ltd. in April 2003. In December 2008, the business relocated its integrated operations to Binhai County, Yancheng, Jiangsu, creating the foundation for continued manufacturing expansion.
Today, the group operates two independent production factories and three sales companies. Through X-Semi, this manufacturing base is presented to international customers as one coordinated platform for discrete semiconductor products, technical collaboration, and dependable delivery.
2003
Founded in Shanghai
The predecessor company established its electronics business and customer base.
2008
Manufacturing moved to Yancheng
Integrated operations relocated to Binhai County, Jiangsu.
TODAY
A connected group platform
Two factories and three sales companies support domestic and global programs.
NEXT
Higher-reliability devices
Continued development in automotive ESD, energy systems, and compact integration.
One group. Five operating companies.
Manufacturing depth in Jiangsu is connected to customer-facing teams in Shanghai and Guangdong, creating a direct path from requirement definition to production and delivery.
XIRUN ENTERPRISE GROUP
International brand, production, sales, and customer support.
Yancheng Xirun Semiconductor Co., Ltd.
75 mu campus with two modern production buildings and one integrated office building.
Jiangsu Weisenmei Microelectronics Co., Ltd.
Independent operation with a 20,000 m² cleanroom manufacturing facility.
Shanghai Xinzhi Electronics
Commercial coordination and customer support.
Guangdong Xirun Semiconductor
South China sales, warehousing, and technical coordination.
Weisenmei Microelectronics (Shanghai)
Market development and customer program support.
100+ mu
Group land area
Across the manufacturing footprint
35,000 m²
Yancheng Xirun
Production and office buildings
20,000 m²
Jiangsu Weisenmei
Cleanroom production building
15%
Technical & quality
Senior R&D and quality personnel
Automation, process control, and traceability in one production system.
Automated die attach, assembly, inspection, and electrical testing are coordinated through MES and ERP systems to control product consistency from development through volume delivery.
Device development
Product and process requirements are translated into controlled device programs.
Die attach & assembly
Automated equipment supports stable placement, joining, and package assembly.
In-process inspection
Defined checkpoints and machine-vision inspection maintain process visibility.
Electrical testing
Performance is evaluated against controlled specifications before release.
MES / ERP traceability
Production, quality, inventory, and delivery records remain connected by lot.
Release & delivery
Approved output moves through documented packaging and shipment control.
Device development
Product and process requirements are translated into controlled device programs.
Die attach & assembly
Automated equipment supports stable placement, joining, and package assembly.
In-process inspection
Defined checkpoints and machine-vision inspection maintain process visibility.
Electrical testing
Performance is evaluated against controlled specifications before release.
MES / ERP traceability
Production, quality, inventory, and delivery records remain connected by lot.
Release & delivery
Approved output moves through documented packaging and shipment control.
Engineering depth backed by structured quality systems.
The group combines continuing device development with automotive-oriented quality management, environmental controls, and independently tested product compliance.
22
Invention patents
Granted technology assets
47
Utility model patents
Manufacturing and product innovation
5
IC layout registrations
Registered layout-design rights
MANAGEMENT SYSTEMS & COMPLIANCE
ISO 9001ISO 14001IATF 16949RoHSREACHSGS tested
SELECTED RECOGNITION
- National specialized and innovative ‘Little Giant’ enterprise
- Jiangsu specialized and innovative SME
- Jiangsu Province graduate workstation
- Semiconductor packaging and testing brand recognition
Device programs connected to the industries shaping electrification.
Core products include diodes, transistors, bridge rectifiers, small-signal devices, and MOSFETs for demanding power, switching, and protection applications.
New energy vehicles
Photovoltaics & energy storage
LED lighting
Smart appliances
SELECTED STRATEGIC RELATIONSHIPS
BYDHuaweiMidea20+ industry leaders
Customer programs are supported across China, Asia, Europe, and the Americas.
The principles behind every product and partnership.
Innovation-led
Technology development guides product and manufacturing decisions.
Quality-first
Green, controlled manufacturing protects consistency and reliability.
Built together
Responsibility and collaboration connect our teams, customers, and supply partners.
SUSTAINABLE MANUFACTURING
Advancing lower-carbon electronics through better discrete devices.
X-Semi applies green manufacturing principles and continued process innovation to deliver efficient, high-performance semiconductor solutions that support cleaner energy systems and the long-term development of the electronics industry.
Connect your next product program to a proven manufacturing platform.
Explore the product catalog or speak with our commercial and technical teams about selection, qualification, samples, and supply.