Quality control

Quality control of auto parts — is a complex, multi-layered process that begins with the selection of reliable raw material suppliers. 
This stage involves scrutinizing certification and material compliance with international standards such as ISO and IATF. 
After supplier verification, the incoming raw materials are controlled: they are tested for physical and chemical characteristics to ensure their suitability for further production.

The storage conditions of raw materials play an equally important role in the control process. 
Materials that require special conditions (e.g., specific temperature or humidity) are placed in warehouses where strictly regulated parameters are maintained. 
This ensures that the raw material retains its properties until it is used.

There are also intermediate control steps during the production process. 
At every important step — from initial processing to final assembly — specialists assess the quality of parts by checking for defects, compliance with technical drawings and tolerances. 
This allows for timely identification and correction of potential problems before production is finalized.

The final stage of control is to check the finished product for exact conformity to dimensions and absence of defects. 
Each component is carefully evaluated and specially tested for strength, durability and resistance to negative factors such as corrosion or extreme temperatures. 
These industry tests ensure that auto parts are reliable and safe to use.

Inspection at distributors' warehouses is the final link in the quality assurance chain. 
Once the finished product has been transported, it is delivered to the distributors' warehouses, where the condition of each batch is re-inspected. 
This is important to ensure that no damage or changes affecting the quality have occurred during transportation. 
Products that do not meet the established standards are rejected, which prevents the release of low-quality auto parts for sale. 
This additional control ensures that the end user receives a top quality product.

Thus, a comprehensive approach to quality control at all stages of production and logistics ensures that ZENNEK products meet the most stringent standards.
Reliability and safety of auto parts is our priority!