i don't know too. but i see #1800 is different from #1898 in view of their industries.
as i had #1171 before for more than a year. its price went down from $7.5 to $4.5. after knowing the reasons, i lost confidence already. but thanks to the brother cyberken's advice, i sold all of them at $6.5 yesterday before the listing of #1898 today.
the reasons are:
1. the PRC gov't controls the price of raw materials including coal;
2. the export price of coals rises for foreign countries due to rmb rises; export's down;
3. the coal is a dirty energy in comparing to gas and oil; so foreign countries use less except the PRC;
brothers, the above are my personal views