Our eternal pursuits are the attitude of "regard the market, regard the custom, regard the science" as well as the theory of "quality the basic, have confidence in the very first and management the advanced" for Maximum Differential Pressure2 4.0 bard (58 psid) 1.0 bard (14.5 psid) Operating Temperature 32 °C (90 °F) 82 °C (180 °F) Description 1016 mm (40″), , , ,. We have exported to more than 40 countries and regions, which have gained good reputation from our costumers all over the world. The product will supply to all over the world, such as Europe, America, Australia,Lithuania , Argentina ,Denmark , Mauritius .We set a strict quality control system. We have return and exchange policy, and you can exchange within 7 days after receive the wigs if it is in new station and we service repairing free for our products. Please feel free to contact us for further information and we will offer you competitive price list then.