Sold - Ozner (2014.hk) and China Sanjiang (2198.hk)

Got stopped out at $1.34 for 3K Ozner (2014.hk) shares (2+1 pyramid) today.

Profit of $139.26 (3.6%). I think I had tightened my stop loss levels a little too tight.

Sold 1K China Sanjiang (2198.hk) shares @ $1.42 as I thought MACD levels were heading south.

Yet, today's trading opened at $1.37 and hit a high of $1.55 before closing at $1.49 :( Bummer.

China Sanjiang (2198.hk) - Investing in "faceless" companies

Bought 1K of Sanjiang (2198.hk) at $1.40 this morning purely based on OBV and MACD levels.

I wonder how full-time traders operate. Do they feel uncomfortable not knowing what kind of companies they "invest" in?

Are the companies purely symbols to be traded? "Faceless" entities that which they derive profit from?