Positive pressure plate 13 groups, the motherboard tungsten carbide processing1.convenient and quick installation. No influence to production 2.easy and convenient to operate 3.not need much maintenance 4.excellent design of control box 5.tube of high quality ressting high rempweature and stainless steel pipeline 6.sompressed air control 7.german quick tie-in 8.taiwan electro walve and penumatic components