Sumisei Sangyo Co., Ltd.
Sales of all types of materials and machinery parts
Sumisei Engineering Co., Ltd.
Design, drawing and engineering services
Sumisei Hydraulic Systems Co., Ltd.
Production, maintenance and sales of aerospace and hydraulic equipment
SPP Technologies Co., Ltd.
Production, sales and support of MEMS/semiconductor related process tools
SPT Microtechnologies USA, Inc.
Manufacture and sales of thermal process furnace equipment etc. and relevant services for semiconductor related device industry
Sumisei Service Co., Ltd.
Employee welfare-related services
Shinsen Seiki Co., Ltd.
Processing of all types of machinery parts
SPP Nagasaki Engineering Co., Ltd.
Maintenance, repair and overhaul on aircraft landing gear systems and customer support
Silicon Sensing Systems Ltd.
Production and sales of motion sensors
Sumitomo Precision USA, Inc.
Production and sales of heat exchangers for aerospace
Ningbo SPP Hydraulics Co., Ltd.
Production and sales of QT pump
Production and sales of casting products
Sumitomo Precision Shanghai Co., Ltd.
Development and sales of environmental systems
SPP Canada Aircraft, Inc.
Design, assembly, sales and customer support for Commercial Landing Gear Systems
CFN Precision Ltd.
Production and sales of aircraft parts
Tecnickrome Aéronautique Inc.
Surface finishing of aircraft parts
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