That's what the OnePlus said. But can you find any evidence for that?
Searching for “OPPO Electronic” on Google brings up an “OPPO Electronic” knowledge base card on the right, which links to the OPPO that makes smartphones -- the entity OnePlus says is not OPPO electronic but instead OPPO Mobile.
And the Wikipedia page for “OPPO Electronics” says that the company is an an electronics manufacturer, not an investment company. Further, the article says that the Chinese translates as “Guangdong Oppo Mobile Communications Co., Ltd.”
(OPPO Digital, which is a California company that licenses the name from Oppo.)
There's only one company web site: http://global.oppo.com
If that's the so-called "OPPO Mobile," where's the web site for the so-called "OPPO Electronic"?
As far as I can tell, OPPO Electronic and OPPO Mobile are one and the same company.