In the decades before WW1 Sarkandaugava became the largest industrial area in the city with many factories and rental homes for workers. It is still economically significant. The largest enterprise in the area is Rigas Elektromasinu Rupnica (www.rer.lv) that can be seen under my gallery "Industrial Latvia". There is also some high-tech production, for example, Baltic Scientific Instruments makes radiation measurment equipment for International Atomic Energy Agency, SAF Tehnika makes radio communications gear for mobile network operators.