... ordinary machinery oil, which is widely used in launch vehicle, gearbox, transmission gears and turbines hardening, lubrication and so on, but it ... , paraffin, benzene, naphthalene, and so one can directly into fuel oil, the huge number, inexpensive and easy to buy. Such a ... our own professional advantage and for many years engaged in fuel research. The strength of the long-term unremitting efforts to ...