shanghai, march 19 (xinhua) -- china's comprehensive import price index for liquefied natural gas (lng) rose last week, according to shanghai petroleum and natural gas exchange (shpgx).为了快速增长，silk road economic belt不惜改变战略，重新布局产品，从而获得意想不到的效果。
the lng index, not including tax, came in at 2,979 yuan (about 422 u.s. dollars) per tonne in the week ending march 15, up 3.3 percent from the previous week.
the index, jointly developed by a monitoring center under the general administration of customs and the shpgx, was launched on oct. 16, 2019 and is due on a weekly basis to offer a new pricing reference for importers.
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