Our Commitment to the Environment (old)

Environmental Policy | Conflict Materials Statement | RoHS Procurement Guidelines

Click here to view all our certifications

1. Sumida Group’s environmental philosophy 
Sumida Group pledges its commitment to cherishing the irreplaceable environment of the earth, implementing healthy and continuous activities, positively grappling with environment protection and effective use of resources, and fulfilling its social responsibilities as a global citizen for transferring a healthy natural environment to next generations. 

2. Environmental protection activities based on ISO 14001
Sumida works to fully respond to environment-related laws and regulations and to determine how to respond even more closely to customer requests. We regularly monitor our progress towards achieving environmental targets, aiming to ensure our activities are producing results.

3. Reduction of environmentally damaging substances in product materials
To abide by the European RoHS Directive and other environmental laws, as well as to respond precisely to needs of its customers, Sumida is pursuing activities to reduce any environmentally damaging substances found in materials used in our products. We are working to ensure that all products comply with the RoHS Directive.


Sites That Have Acquired ISO14001:2015 Certification

Country: Company: Site(s):
Japan Sumida Electric Co., Ltd. M. Laboratory (Sendai)
Aomori Factory
Jiangxi Factory
  Guangzhou Panyu SUMIDA Kou Shui Heng Electric Factory Panyu Factory
Vogt China Manufacturing
Nanning Factory
Hunan Factory
Thailand SUMIDA ELECTRIC (THAILAND) CO., LTD. Thailand Factory
Germany SUMIDA Lehesten GmbH
SUMIDA Components GmbH
SUMIDA Flexible Connections GmbH
SUMIDA Components & Modules GmbH
vogtronics GmbH
Romania SUMIDA Romania S.R.L.  
Slovenia SUMIDA Slovenija d.o.o.  

↑ back to top

Conflict Minerals Statement

Reflecting the Code of Conduct in “Sumida Business Principles”, we never use conflict minerals that originate in conflict-affected and neighboring areas for the purpose of cutting the humanitarian crisis such as violence, plunder, abuse and child labor by rooting out sources of funding for the ongoing conflict. Sumida Group procure conflict-free minerals for fulfilling corporate social responsibilities of Sumida Group.

Profits from the trading of minerals mined such as tin, gold, tantalum and tungsten in the Democratic Republic of Congo and its neighboring nations have been used to finance armed rebel groups, allowing them to continue fighting and encouraging ongoing inhumane acts, such as mining using forced or child labor. Aiming to bring conflict to an end by cutting off the source of funds for armed group, the U.S. Dodd-Frank Wall Street Reform and Consumer Protection Act was signed into law on July 21, 2010. Section 1502 of this act has mandated that companies registered with the Securities and Exchange Commission must publicly disclose their use of conflict minerals. With the cooperation of suppliers, Sumida Group are determining if any such minerals are contained in existing products and establishing a framework to ensure they are not used in new products. As much details as possible of the Sumida Group’s survey (based on the EICC/GeSIDD template) will be disclosed to customers.

↑ back to top


Effort Towards Green Products:

Sumida carries out its activities to provide products free of environmentally hazardous substances (Green Products) to its customers in cooperation with its suppliers.


Standard for RoHS:

Sumida uses the following standard to confirm compliance of products to the RoHS directive. If customers have a special requirement, Sumida will endeavor to meet your needs.

Sumida RoHS compliance product: Non-intentional containing of lead, cadmium, mercury, hexavalent chromium, polybrominated biphenyls (PBB) and polybrominated biphenyl ethers (PBDE) in the product do not exceed the below threshold.

Cadmium: 0.01% wt (max. concentration by weight in homogenous materials)
Mercury: 0.1% wt (max. concentration by weight in homogenous materials)
Hexavalent Chromium: 0.1% wt (max. concentration by weight in homogenous materials)
Lead: 0.1% wt (max. concentration by weight in homogenous materials)
Polybrominated biphenyls (PBB): 0.1% wt (max. concentration by weight in homogenous materials)
Polybrominated diphenyl ethers (PBDE): 0.1% wt (max. concentration by weight in homogenous materials)
Bis (2-Ethylhexyl) phthalate (DEHP) 0.1% wt (max. concentration by weight in homogenous materials)
Butyl benzyl phthalate (BBP) 0.1% wt (max. concentration by weight in homogenous materials) 
Dibutyl phthalate (DBP) 0.1% wt (max. concentration by weight in homogenous materials)
Diisobutyl phthalate (DIBP) 0.1% wt (max. concentration by weight in homogenous materials)
* Deca-BDE is included in PBDE.
* The use exempted from RoHS Directive is excepted.


Certificate of Compliance - RoHS Declaration
SUMIDA Prohibition & Declaration of Substances (SUMIDA EUROPE GmbH & SUMIDA COMPONENTS & MODULES GmbH)


  1. What is the best preservation condition for keeping the RoHS compliant product?
    The preservation environment must be controlled to prevent any caustic substance/effect (including airborne) or dew condensation. The expected ambient temperature should be between 5 and 40° C and relative humidity of 20 to 70%.
  2. Are there any differences between Lead Free products and RoHS compliant products?
    Previously listed "lead free" products were studied and considered compliant, in regards to lead content only for lead-free soldering of terminal connection, case, and hoop. At that time, Cadmium, Mercury, Hexavalent chromium, PBB, and PBDE were not studied. So we can not say "lead free = RoHS compliance". In fact, only a few products reviewed their constituents on the six hazardous substances and eliminate them.
  3. When is the expected date of full conversion of Sumida products to RoHS compliant products?
    After January, 2006, SUMIDA only manufacture RoHS compliant products.
    NOTE: Regarding customized products, we will follow the date of specific customer requirements.
  4. How can customer distinguish the RoHS compliant devices from the non-compliant parts?
    SUMIDA standard products (S-074-XXXX specification sheets): A RoHS logo will be added on specification and on the reels & boxes.
    Customized products: We basically change the part name in conversion from lead free to RoHS compliance. Actually, we follow the customer’s requirement.
  5. Can customer order those non-compliant RoHS products?
    SUMIDA does not manufacture non-RoHS compliant standard products (S-074-XXXX) after January, 2006. Regarding customized products, when non-RoHS compliant products are needed by all means with products having you place an order conventionally, we shift it to customized products handling and the present production is possible. It becomes the other controlled production as non-standard products.

↑ back to top

Green Procurement Policy & Guidelines

We at SUMIDA are committed to the identification and assignment of outside suppliers as our counterpart partners who will support us in achieving our Charter goal of customers’ satisfaction.

Product production is 100% reliant on overseas Sumida facilities with local procurement of materials and therefore requires an ‘Only One’ globally unified procurement policy across all local production markets.


Selection for partnering with suppliers will done on a open, frank and fair basis for creating business opportunities for both parties, and evaluation criteria for selection will take in to consideration quality, competitive pricing, speed of delivery and environmental consciousness.


The mutual business relationship between Sumida Group and each of its suppliers one based on mutual development and trust, with an understanding of the need for control of confidential information and respect for local social and legal sensitivities.

Guidelines - Asia and N. & S. America

For general procurement-related guidelines and documents applied in Asia and N. & S. America regions, please visit Info Centre for details.

Info Centre: Procurement - Asia and N. & S. America

Guidelines - Europe

The objective we follow with our purchasing philosophy – always taking into account the local requirements of our production sites – is to establish stable and friendly long-term relationships through close cooperation with our suppliers. 

For more information please see following pages:

SUMIDA Components & Modules
SUMIDA Electronic Manufacturing Services (EMS)
SUMIDA Ceramic Components
SUMIDA Flexible Connections

For general procurement-related guidelines and documents applied in Europe region, please visit Info Centre for details.

Info Centre: Procurement - Europe

↑ back to top