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Product DetailsOur CompanyNINGBO YOULIN TRADING CO.,LTD.
specializes production and exports custom designed parts , auto repair tools , marine hardware and etc . Our core processes include die-closed hot forging , precision casting , CNC machining in material brass , aluminum , copper , SS etc . We pride ourselves on long-standing relationships withmany of our customers , some of whom

we've been able to provide design assistance ( particularly in the area of manufacture abilityand cost reduction) , JIT delivery , prototype and experimental parts, expedited deliveries when necessary.
If you have a part you'd like us to look at, please contact us for a prompt,competitive quote.
>>>>>>>>>>>>>>Contact us>>>>>>>>>>>>>>Quality Control Policy
Youlin is committed to provide high quality components with competitive price. Each part will be strickly machined to the print.
Youlin is committed continually improves the effectiveness of the quality management system (QMS) and sets quality objectives and continuous improvement plans.
Youlin is committed introducing all staff to its quality policy and quality systems,to familiarize themselves with the QMS and strive to continue to improve upon the quality, capability and work environment.Detailed Quality Control In Manufacturing Process
Material SupplyTo be sure material specification and size correct.
To be sure material chemical composition correct, material certification must be provided in each material purchasing lot.



Equipment Maintain
Machining equipments maintain: Checked by each day, have records to track.
Inspection equipment maintain: Checked by each 15 days, have records to track.
Machining ProcessSetup work instruction chart for each part.
Check production process and updated drawing issue before machining.
Fixed Inspection: 4 times/shift, have records to check, carried by QC.
Random Inspection: to avoid uncertain potential quality issues.
Final Inspection: Each part have its final inspection stardard before packing, have inspection sheet to track.
Packing and AssemblyTo meet custom requirments, including labels, cartons, pallets etc before shipment.
Packing & DeliveryCertificationsContact