The Pre-Shipment Inspection (PSI) is one of many types of quality control inspections conducted by Yantai yunpan international trade Co.,Ltd.. This inspection is done according to standard QC Test, or based upon customer requirements. Samples are selected and inspected for defects at random, according to these standards and procedures. For us, Pre-Shipment Inspection is an important step in the quality control process and is the method for checking the quality of transmission equipment before they are shipped.

YUNPAN is a experienced sfp optical module manufacturer with a strong company culture. YUNPAN's epon onu series contains multiple sub-products. It has the advantage of high color rendering index(CRI) which eventually contributes to producing precise and pure color temperature. It is made in compliance with RoHS and WEEE environmental standards. The service and access network equipment products of YUNPAN are all designed to satisfy the demand of its customers. The product can provide carrier-class security guarantee.

Our commitment to our customers has been at the core of who we are. We're committed to constantly creating and reinventing with the singular purpose of making a real difference for our customers.