Do you have a procedure for the control of your subcontractors in the manufacture of components of the approved valves and fire fighting products ?

As non-conforming components or parts provided by subcontractors could significantly affect our product quality, we have a strict subcontractor management plan when working with them. We periodically determine and review the qualification of our subcontractors by different indicators, including whether subcontractors currently have recognized quality management system certification on file, whether they provide declaration of conformity that prove their products and manufacturing process are in conformity with the standards, strict incoming inspections and tests, periodic on-site audit carried out by our quality control department.