Paul Mueller (OTCMKTS:MUEL) and THT Heat Transfer Technology (OTCMKTS:THTI) are both small-cap industrial products companies, but which is the better stock? We will compare the two businesses based on the strength of their risk, profitability, analyst recommendations, institutional ownership, dividends, valuation and earnings. Earnings & Valuation This table compares Paul Mueller and THT Heat Transfer [...]