Society
Tongwei has always implemented the concept of green development, actively practiced the goals of the dual-carbon strategy, and is committed to promoting sustainable, high-quality development of society.
Product Quality and Safety Management
Sustainable Supply Chain
Human Capital Development
一、Product Quality and Safety Targets
Tongwei has always viewed product quality and safety as the lifeline of its development, and it commits to building a high-quality, high-standard management system that covers the entire industrial chain.
2025 Targets:
The company will implement stricter quality control standards, striving to achieve 100% product pass rate upon factory shipment, zero quality and safety incidents, and 100% resolution rate of customer complaints.
2025 Targets:
The company will implement stricter quality control standards, striving to achieve 100% product pass rate upon factory shipment, zero quality and safety incidents, and 100% resolution rate of customer complaints.
二、Full Lifecycle Quality Management
Tongwei comprehensively applies refined management principles throughout the entire product lifecycle, from procurement source, production processes, finished product inspection, to product recall, forming a full-process, closed-loop management system to ensure continuous control over product quality and safety.
Product introduction phase:
Conduct industry benchmarking to collect the latest product quality data from competitors; develop product development plans with clearly defined objectives, timelines, and expected outcomes for each phase.
Product Testing Phase:
Strictly monitor and control testing processes in accordance with management procedures; promptly organize and analyze data to identify and optimize potential issues; evaluate whether validation samples meet criteria for normal inventory to prevent risky products from entering circulation; for tests involving animal experimentation, strictly adhere to the 3R Principles (Replacement, Reduction, Refinement) to mitigate potential risks.
Product mass production phase:
Establish material acceptance and incoming inspection standards; automate manufacturing processes and quality inspections; conduct regular patrol inspections and specialized audits; apply PDCA (Plan-Do-Check-Act) cycles for continuous quality improvement; audit potential quality issues and drive production line optimizations to prevent non-conforming products.
Handling of non-conforming products:
Develop monthly, quarterly, and annual reliability testing plans to monitor finished product reliability; perform root cause analysis and implement corrective measures.
Conduct industry benchmarking to collect the latest product quality data from competitors; develop product development plans with clearly defined objectives, timelines, and expected outcomes for each phase.
Product Testing Phase:
Strictly monitor and control testing processes in accordance with management procedures; promptly organize and analyze data to identify and optimize potential issues; evaluate whether validation samples meet criteria for normal inventory to prevent risky products from entering circulation; for tests involving animal experimentation, strictly adhere to the 3R Principles (Replacement, Reduction, Refinement) to mitigate potential risks.
Product mass production phase:
Establish material acceptance and incoming inspection standards; automate manufacturing processes and quality inspections; conduct regular patrol inspections and specialized audits; apply PDCA (Plan-Do-Check-Act) cycles for continuous quality improvement; audit potential quality issues and drive production line optimizations to prevent non-conforming products.
Handling of non-conforming products:
Develop monthly, quarterly, and annual reliability testing plans to monitor finished product reliability; perform root cause analysis and implement corrective measures.
三、Management of Hazardous Substances in Products
Tongwei places product safety as its top priority and fully implements the green and environmental protection concept. During the R&D phase, the Company strictly controls hazardous substances to ensure compliance with the EU's RoHS Directive and REACH Regulation. The Company enforces strict control over its supply chain by requiring suppliers to provide compliance test reports, and uses environmentally friendly materials such as fluorine-free back sheets to reduce the use of hazardous substances, significantly lowering environmental risks. After undergoing third-party authoritative tests, the products can meet the stringent requirements of markets such as Europe and Japan.The Company's PV products have passed regular hazardous substance tests and remain committed to continuously providing clients with safe and reliable product solutions.
四、Product Recall Management
The Company has established the Product Recall Policy and other institutional documents to strictly regulate the product recall procedure, clarify the conditions for triggering a recall, the evaluation, approval, execution, and record-keeping steps, ensuring a prompt response where quality issues are identified, thereby protecting client rights and maintaining the Company's reputation. In 2024, Tongwei Co., Ltd. rigorously implemented its quality management system, achieving zero product recalls throughout the year with no recall-related expenditures.
Initiate the recall procedure
Immediately initiate the recall procedure when potential quality or safety risks are identified in products.
Product recall review meeting
Convene a product recall review meeting to assess whether to recall products
Handling Decision
If no recall is required
implement other effective measures to resolve the issue
Recall product
To communicate with clients , follow the Client Complaint Handling Process
To process recalled products, follow the Non-Conforming Product Control Procedures
To process recalled products, follow the Non-Conforming Product Control Procedures
Implementation & Information Management
Document the entire recall process, promptly disclose the handling results, and complete relevant documentation archiving.
Adhering to the principle of long-term collaboration and mutual growth with suppliers, Tongwei is committed to building a green and sustainable digital supply chain system and fostering a co-created and win-win supply chain ecosystem. The Board of Directors, as the highest governance body, ensures the company's supply chain ESG strategy is fully aligned with its sustainable development goals through regular oversight of ESG initiatives throughout the supply chain.
Supply Chain Sustainable Development Goals
From 2024 to 2026, the company will complete risk identification and on-site audits of key raw material suppliers in stages, continuously building and optimizing the sustainable supply chain system.
2024 Achievement: Achieved full compliance coverage among major raw material suppliers, with 100% signing rates for the Social Responsibility Commitment, Compliance Commitment, and Integrity Commitment.
2025 Target: Advance ESG risk management systematically, aiming to achieve 100% coverage in ESG risk identification and assessment for major raw material suppliers.
2026 Target: Deepen sustainable supply chain practices, with the goal of reaching a 100% on-site audit completion rate for core raw material suppliers.
2024 Achievement: Achieved full compliance coverage among major raw material suppliers, with 100% signing rates for the Social Responsibility Commitment, Compliance Commitment, and Integrity Commitment.
2025 Target: Advance ESG risk management systematically, aiming to achieve 100% coverage in ESG risk identification and assessment for major raw material suppliers.
2026 Target: Deepen sustainable supply chain practices, with the goal of reaching a 100% on-site audit completion rate for core raw material suppliers.
Full Life Cycle ESG Risk Management
Supplier Screening:
Require suppliers to sign The Social Responsibility Commitment Letter and The Supplier Conflict Minerals Commitment and Statement of Tongwei, and submit ESG qualification for review, and reject those who are not qualified.
Supplier Risk Identification and Assessment:
Evaluate suppliers using the "Supplier Scorecard", which covers labor rights, business ethics, environmental management and other aspects, so that suppliers with high scores will be prioritized under the same conditions.
Supplier Audit and Supervision:
Assessing supplier sustainability through EHS-ESG evaluations, self-reports and audits; Rewarding top performers with tier upgrades, procurement preference and incentives.
Supplier Withdrawal:
Suppliers failing to rectify problems will be withdrawn.
Supplier Training:
Boosting suppliers’ management capabilities and awareness across environmental protection, climate action, workforce and society, compliance management, business ethics, and sustainable development.
Require suppliers to sign The Social Responsibility Commitment Letter and The Supplier Conflict Minerals Commitment and Statement of Tongwei, and submit ESG qualification for review, and reject those who are not qualified.
Supplier Risk Identification and Assessment:
Evaluate suppliers using the "Supplier Scorecard", which covers labor rights, business ethics, environmental management and other aspects, so that suppliers with high scores will be prioritized under the same conditions.
Supplier Audit and Supervision:
Assessing supplier sustainability through EHS-ESG evaluations, self-reports and audits; Rewarding top performers with tier upgrades, procurement preference and incentives.
Supplier Withdrawal:
Suppliers failing to rectify problems will be withdrawn.
Supplier Training:
Boosting suppliers’ management capabilities and awareness across environmental protection, climate action, workforce and society, compliance management, business ethics, and sustainable development.
During supplier access screening and annual regular audits, we grade suppliers using Supplier EHS Audit Form and Supplier ESG Audit Form, evaluating their performance in areas such as labor management, environmental protection, occupational health and safety, and business ethics. ESG factors such as labor management are evaluated alongside quality, pricing, and other assessment criteria to determine supplier ratings and risk level assessment results.
If a supplier is involved in the following "zero-tolerance items " and poses significant potential risks, Tongwei reserves the right to terminate the new supplier introduction process or to cease cooperation with suppliers already in the pool.
Failure to obtain the necessary environmental permits
Illegal discharge of air emissions, wastewater, or solid wastes
Serious occupational health and safety problems
Failure to obtain the necessary occupational health evaluation, safety evaluation, filing and acceptance
Failure to obtain fire permits
Child labor, discrimination, forced labor, etc.
Failure to comply with the payment of employee salaries and benefits
Use of forged or false documents
Major breach of trust records
Commercial bribery
Unauthorized subcontracting
Use or procurement of mineral resources from conflict areas
Failure to obtain the necessary environmental permits
Illegal discharge of air emissions, wastewater, or solid wastes
Serious occupational health and safety problems
Failure to obtain the necessary occupational health evaluation, safety evaluation, filing and acceptance
Failure to obtain fire permits
Child labor, discrimination, forced labor, etc.
Failure to comply with the payment of employee salaries and benefits
Use of forged or false documents
Major breach of trust records
Commercial bribery
Unauthorized subcontracting
Use or procurement of mineral resources from conflict areas
Supplier Audit
Supplier Audit:
To ensure compliance and sustainability across our supply chain, Tongwei conducts regular audits covering multiple supplier categories. In 2024, the Company audited 106 Tier 1 suppliers (direct suppliers), 160 Tier 2 suppliers (component suppliers) and 199 Tier 3 suppliers (raw material suppliers). The company's audits of these three categories of suppliers cover a variety of dimensions, including but not limited to the environmental management, labor management, business ethics, etc. Suppliers who fail to meet the requirements are ordered to immediately rectify the issue and carry out secondary audits to continuously track and improve the sustainable performance of suppliers.
To ensure compliance and sustainability across our supply chain, Tongwei conducts regular audits covering multiple supplier categories. In 2024, the Company audited 106 Tier 1 suppliers (direct suppliers), 160 Tier 2 suppliers (component suppliers) and 199 Tier 3 suppliers (raw material suppliers). The company's audits of these three categories of suppliers cover a variety of dimensions, including but not limited to the environmental management, labor management, business ethics, etc. Suppliers who fail to meet the requirements are ordered to immediately rectify the issue and carry out secondary audits to continuously track and improve the sustainable performance of suppliers.
Responsible Procurement
（1）Labor Safety and Health
We are dedicated to collaborating with our suppliers to establish a workplace characterized by dignity, ethical standards, safety, and health protection. We conduct targeted assessments on critical issues such as child labor, forced labor, working hours, and labor safety and health. Through various channels, we assess the labor health and safety conditions maintained by our suppliers to ensure strict adherence to labor rights and the provision of a safe working environment that aligns with established standards.
（2）Green and Low-Carbon Supply Chain
Adhering to the concept of green development, we actively implement green procurement and promote the green transformation of suppliers to create a low-carbon supply chain.
Green Procurement:
We give full consideration to factors such as environmental protection, resource conservation, recycling and low-carbon, prioritizing the sourcing and utilization of energy-efficient, water-efficient, and material-efficient materials, products, and services under equal conditions. Furthermore, we proactively steer suppliers towards establishing a sustainable value chain within the industry.
Energy Saving and Consumption Reduction:
We introduce advanced energy-saving technologies and equipment, promote packaging-free, green packaging and recyclable materials, and improve overall supply chain energy efficiency.
（3）Conflict Minerals
We strictly adhere to the UN Global Compact, OECD’s Due Diligence Guidance for Responsible Supply Chains of Minerals from Conflict-Affected and High-Risk Areas, the Responsible Minerals Initiative (RMI), as well as other international conventions and industry initiatives. We procure mineral raw materials conscientiously, striving to ensure that all raw materials for our products are sourced in an appropriate manner. We actively promote suppliers to complete the CMRT Conflict Minerals Questionnaire while consistently carrying out the Company's responsible sourcing program.
（4）Procurement Traceability
Tongwei has the traceability capability from modules back to silicon ore, and has achieved internalized vertical integration across the entire process from modules to silicon material.
Traceability order negotiation, confirmation and notification
Traceability order production and purchasing arrangement
Tracing document and evidence collection and preliminary review
Tracing document and evidence final review, organization and submission
Third-party traceability and on-site audit of labor compliance system
Supply Chain
Module process
Cell process
Silicon wafer process
Silicon rod process
Silicon rod process
Silicon powder, silicon metal,
and silicon ore process
and silicon ore process
Tongwei’s tracing methodology/capabilities have been verified by independent third-party entities such as STS, TÜV Rheinland, etc. According to the Supply Chain Verification conducted by TÜV Rheinland, the sectors of Module, Wafer, Ingot, and Polysilicon have attained AA ratings respectively, and sector of Cell has attained an A rating.
| Supply Chain | Traceability Capability |
Remark: AA-Outstanding level, >80 score A-Common level, 65 ≥score B-Need improvement, ≥55 score C-Only meet basic requirement, <55 score F-Material information untraceable 0 score, critical item fails Supply Chain Verification conducted by TÜV Rheinland |
|---|---|---|
| PV Module | AA | |
| PV Cell | A | |
| PV Wafer | AA | |
| PV Ingot | AA | |
| Polysilicon | AA |
Tongwei adheres to the management philosophy of "effective management hinges on personnel selection" and places significant emphasis on holistic talent development. Over the years, we are committed to establishing a diverse, inclusive, healthy, and safe work environment to uphold the fundamental rights and well-being of employees, fostering their continuous growth, and pursuing mutual advancement for both the organization and workforce.
Contact Us
You can through the following contact information to provide your feedback
twesg@tongwei.com