The Pre-Shipment Inspection (PSI) is one of many types of quality control inspections conducted by Nanjing Blue Sky Filter Co.,Ltd.. With no exception, hepa filter manufacturer is also inspected for quality control prior to shipment. This inspection is based on the product's Standard Acceptable Quality Limit specification or on customer request. Based on these criteria and procedures, samples are randomly selected and defects are checked. The Pre-Shipment Inspection helps both ourselves and customers to reduce the potential risk of delivery delay or/and fix or redo products. At last, the product will be photographed to ensure that the order is in perfect condition, complete, and properly packaged for shipment.

Blue Sky is adept at manufacturing premium refrigerator air filters for many years. The air purification filters series has become a hot product of Blue Sky. Blue Sky cooker hood parts is produced in line with environmental protection requirements. The electrolyte and metal ingredients in the battery cells have been tested to meet the national standards for the battery industry. cooker hood filters is more suitable for a variety of occasions.

Our aim is 'providing customers with value-added pocket filters and services'. Get an offer!