Oxymethylene copolymers having a high proportion of terminal alkyl ether groups and having terminal hydroxyalkylene groups are described. The physical data associated by social networking platforms results in creation of reduced data set for analytics and requires low processing requirements for application usage. The individual sections are connected to each other along the long sides. The PWM signal stop circuit receives the detection signals from the abnormal signal detection circuit, and stops the outputs of the PWM signals. The nozzle having a relatively short axial dimension and the ribs providing desirable flow characteristics.