① Supplier qualification & management

We adhere to a strict supplier qualification system to ensure the reliability of raw material sources. All suppliers must undergo a comprehensive evaluation process.We audit their production facilities, quality management systems,certifications such as ISO 9001 and ISO 14001,as well as their past performance records.Only suppliers that comply with international trade regulations and environmental standards, and meet our strict standards, will be included in our list of qualified suppliers.We conduct regular audits and performance evaluations of our suppliers every six months.We will monitor the continuous compliance of our suppliers. If there are any suppliers that don't meet the requirements,we will immediately terminate the cooperation.

② Incoming inspection & testing

Before entering production or delivery,each batch of raw materials undergoes strict inspection and testing.After the raw materials arrive,they are verified against the purchase orders,delivery notes and analysis certificates provided by the suppliers.The material composition,mechanical properties, dimensional accuracy and chemical resistance,all the key quality indicators are all tested in our internal laboratory or by authorized third party testing institutions.All substandard raw materials will be immediately isolated, labeled and rejected. We will keep detailed records of rejections and handling for traceability.

③ Compliance & standards assurance

We guarantee that all supplied raw materials comply with relevant international,regional and client specific standards.Raw materials meet industry standards and client specified technical requirements.For restricted substances,materials need to comply with environmental regulations.We provide complete document according client request to verify conformity.

④ Traceability system

Throughout the entire supply chain,we have a complete traceability system that can track raw materials.We ensure that each batch of raw materials has a unique batch number, which is associated with supplier information,production date,inspection records and delivery details.Records can be permanently retained so that they can be quickly investigated and recalled in case of quality problems.Clients can request batch traceability information at any time for verification.

⑤ Continuous improvement

We will constantly improve our raw material quality management system.As you know that We collect and analyze clients' quality feedback.We will optimize the shortcomings to satisfy the clients.We will provide training for the quality control team.We will help our employees enhance their professional capabilities. As you know that we ensure continuous quality improvement.