Manual multi-leaf valve; micro-perforated muffler elbow; pipeline pipeline under the double turn;
好长,,不知道语法错没。
Manual split leafy regulating valve; Micro perforated plate muffler elbow; Pipe doubled; Then pipeline;
Manuallyoutside themulti-leafregulatingvalvemicro-perforated plate mufflerelbowpipesuppipesturn