SHANGHAI, Apr. 16 (SMM) – Spot tin prices dropped to RMB 166,500-169,000/mt last Friday in Shanghai, compared with RMB 168,500-170,000/mt a week earlier, as traders lowered quotations to lure buying. Smelters reduced supply with high production costs caused by staying high tin ore prices. Though spot tin prices dropped continually, buying stayed weak in the face of weak demand, except a slight pick up on Thursday at low-end prices. Both buying and selling are depressed at the moment, waiting for a direction from the news side.