The Pre-Shipment Inspection (PSI) is one of many types of quality control inspections conducted by Yantai yunpan international trade Co.,Ltd.. With no exception, optical transmitter 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.

The YUNPAN brand is primarily focused on the production of access network equipment. YUNPAN's epon onu series contains multiple sub-products. YUNPAN user interface board has passed the FCC, CE and ROHS safety certification, which is regarded as an internationally qualified product.The robust structure enables it to withstand impact. Containing many luminophores, it still features good light colors consistency and is capable of emitting numerous kind of light colors, such as blue, orange, yellow, red, white, etc. The product covers high network system security.

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