Dear Sir/Madam, How are you? This is Bell, sales manager taking care of South Asian medical market from PROBE Science & Technology Company in Shenzhen, who are leading manufacturer for ventilator and anesthesia machine in China with over 5 years. Our products are being sold to more than 40 countries in the world, with all models get CE certificate and good quality also. That is why we are the unique manufacturer who have DualPAP and PRVC / NPPV ventilator in China; besides,1) have electronic flowmeter and more powerful function such as gas module,CO2,SP2 modules just like MINDRAY while other competitors from China and other countries except high level machines of GE and DRAGER. You can log in our website www.probemedical.com for more details about our company and products.