SHANGHAI, Mar 17 (SMM) - According to SMM statistics, the social inventory of silicon metal in the three places totaled 125,000 mt on March 17, which was basically the same as last week. The arrivals at Tianjin Port increased during the week while the shipments were basically the same as last week, hence the inventory increased slightly. There was no significant increase in shipments at Huangpu Port this week, hence the total inventory decreased due to the lack of arrivals. Inventory in Kunming has increased slightly, and the tight transportation capacity in Yunnan Province drove up the freight. It is understood that the freight from Yingjiang, Dehong Prefecture, to Kunming was around 250 yuan/mt, which was about 70 yuan/mt higher than the conventional freight.