Recently, the double packed of southeast Asia customer order are completed, and delivered to Tianjin port on January 18. The stuffing boxes are ordered before the Spring Festival and need to finished in one week. We overcome the difficult from low environment temperature, cargo transport and shipping booking business before the Spring Festival. In accordance with the contract requirements, the stuffing boxes are finished and delivery to seaport on time. All performance parameters conform to the requirements of the API 11B standard. We produce a special equipment for mechanical processing of the product to ensure the technical parameter meet standard requirement. Each product implements seal pressure testing from 2000spi to 4000spi to ensure the quality of the products meet the standard requirements.