Northern Technologies International | SC 13G: Statement of acquisition of beneficial ownership by individuals-Needham Investment Management L.L.C.(5.30%),Needham Asset Management, LLC(5.30%), etc.

北方科技國際 | SC 13G：超過5%持股股東披露文件-Needham Investment Management L.L.C.(5.30%),Needham Asset Management, LLC(5.30%)等