December 11 (SeeNews) - Spanish passenger trains manufacturer Talgo and CRRC Qingdao Sifang, a unit of Chinese state-owned rolling stock manufacturer CRCC, have submitted offers in a public tender worth some 1.2 billion levs ($660.1 million/613.6 million euro) for the procurement and 15-year maintenance of 20 single-deck electric push-pull train sets, the ministry of transport said.