Master O’ong Maryono participated in various seminars and conferences. Some of his presentations have been preserved and will be uploaded here in the next few months.
![presentasi](http://oongmaryonopencaksilataward.org/wp-content/uploads/2015/09/presentasi.jpg)
Master O’ong Maryono participated in various seminars and conferences. Some of his presentations have been preserved and will be uploaded here in the next few months.