Hello dear sir. I am engr Tareq Alkharazi, from saudi arabia, and I am working at alzafer hospital. I have here two machine from you, STI-500 and STT-300. I would like to order the sponge for the machine. is it possible i order from you directly or you can direct me to the distributor here because I dont know who is the distributor or his contact. Thank you and waiting for your valuable reply.