We had yesterday the needed business meeting with friends from Duty Mechaine Department of big company. See in attached - needed filters for chineese grader PY220MH, TY165-2 (Weichai WD10G178E25), SD7(Cummins NT855-C280). I need to know info about sended attached files. If you can to help us, we will can to work long time.Just time we have to coordinate second big contanier for carbon vinil films.