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With the continuous development and innovation of manufacturing technology of vacuum sizing insulation pipe production line of Qingdao Haixi Plastic Machinery Co., Ltd., the establishment of a good brand image, and the continuous improvement of production and manufacturing capacity, with the increasing number of customers who choose to purchase the insulation pipe production line of Qingdao Haixi Plastic Machinery Co., Ltd., more and more production lines are placed in Qingdao Haixi Plastic Machinery Co., Ltd The rhythm of customer delivery production line is also accelerating, with two or three lines per week, even daily. Such delivery frequency is already the normal rhythm in Qingdao Haixi.