DCE与CBOT黄豆期价关联性及动态走势实证研究(5)
http://www.sina.com.cn 2006年10月13日 00:45 大连商品交易所
图13 动态预测模型的系数稳定性检验图
动态预测模型的系数稳定性检验图(来源:大连商品交易所)
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八、结论
通过上述分析可知,我们采用协整理论的分析方法具体研究了中国大连黄豆期货价格与CBOT黄豆期货价格等变量的关联性。从单位根检验结果中可以看出,在我们分析的样本期内,我们所选数据的非平稳性是非常显著的。选取的数据均是含有一个单位根的非平稳序列。
通过所作的Granger因果关系检验结果看到:基于周数据,CBOT黄豆期货价格对大连黄豆期货价格的单向引导作用的概率达到98.7%以上。说明中国大连期货交易所黄豆期货价格受美国CBOT期货价格影响极大。国内黄豆期货价格走势完全受CBOT期货价格引导。连豆期货价格对国内大连与黑龙江黄豆现货价格具有显著的单向引导作用,大连黄豆期货的价格发现作用得到充分的发挥。
从最终我们得到的协整方程看到:从最终我们得到的协整方程看到:基于周数据,在我们的协整系统内,美国CBOT黄豆期货价格对中国大连黄豆期货价格的弹性是0.13;在我们的协整系统内,对中国大连黄豆期货价格的弹性是-0.48; 在我们的协整系统内,黑龙江黄豆现货价对中国大连黄豆期货价格的弹性是0.13。
从最终建立的短期动态方程可看到:中国大连黄豆期货价格受其自身滞后1至2周的累积影响,影响较强;中国大连黄豆期货价格受CBOT黄豆期货价格滞后1至2周累积影响,影响稍弱。中国大连黄豆期货价格受美元指数滞后1至2周累积影响,影响稍弱。二者在滞后一天的影响均大于滞后2周的影响。从最终建立的模型各项评价指标来看,该模型具有较好的统计性质,从拟合值及预测值结果看具有较好的拟合及预测精度。因此,该模型对中国大连黄豆期货价格交易风险控制具有较好的参考作用,从而可以及时规避黄豆交易风险,为套期保值者和投资者提供理论与实践的支持。
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附表:
时间 |
连豆期价
(元 /吨) |
美豆连续期价
(美分 /busl) |
欧元兑美元汇率
(美元 /欧元) |
美元指数 |
哈尔滨黄豆现货价格
(元 /吨) |
大连黄豆现货价格
(元 /吨) |
02-5-10 |
2057.3 |
472.9 |
0.9091 |
114.5 |
1840 |
2080 |
02-5-17 |
2061.0 |
481.5 |
0.9116 |
114.2 |
1984 |
2080 |
02-5-24 |
2062.2 |
491.4 |
0.9221 |
112.7 |
2036 |
2096 |
02-5-31 |
2099.3 |
500.8 |
0.9342 |
111.7 |
2040 |
2100 |
02-6-7 |
2114.4 |
509.8 |
0.9416 |
111.1 |
2060 |
2120 |
02-6-14 |
2103.2 |
498.4 |
0.9444 |
110.9 |
2076 |
2136 |
02-6-21 |
2093.6 |
493.1 |
0.9570 |
109.6 |
2076 |
2116 |
02-6-28 |
2076.4 |
514.6 |
0.9843 |
106.8 |
2020 |
2100 |
02-7-5 |
2132.0 |
538.7 |
0.9810 |
107.0 |
2032 |
2100 |
02-7-12 |
2158.8 |
552.0 |
0.9902 |
105.9 |
2060 |
2112 |
02-7-19 |
2099.2 |
575.8 |
1.0090 |
104.5 |
2060 |
2120 |
02-7-26 |
2088.6 |
574.4 |
0.9955 |
105.8 |
2096 |
2132 |
02-8-2 |
2095.8 |
549.3 |
0.9823 |
107.0 |
2200 |
2196 |
02-8-9 |
2101.8 |
550.2 |
0.9712 |
108.1 |
2268 |
2204 |
02-8-16 |
2143.0 |
587.2 |
0.9818 |
106.9 |
2300 |
2224 |
02-8-23 |
2198.4 |
555.1 |
0.9753 |
107.6 |
2340 |
2320 |
02-8-30 |
2182.4 |
555.2 |
0.9802 |
107.1 |
2340 |
2350 |
02-9-6 |
2183.5 |
554.7 |
0.9903 |
106.1 |
2340 |
2350 |
02-9-13 |
2190.0 |
576.3 |
0.9762 |
107.5 |
2340 |
2350 |
02-9-20 |
2206.0 |
569.3 |
0.9766 |
107.7 |
2254 |
2350 |
02-9-27 |
2198.6 |
558.8 |
0.9783 |
107.7 |
2008 |
2200 |
02-9-30 |
2158.0 |
522.4 |
0.9903 |
107.0 |
1957 |
2100 |
02-10-11 |
2156.8 |
527.6 |
0.9851 |
107.3 |
1943 |
2060 |
02-10-18 |
2174.0 |
544.7 |
0.9784 |
107.9 |
1972 |
2060 |
02-10-25 |
2201.4 |
552.9 |
0.9764 |
108.1 |
2020 |
2104 |
02-11-1 |
2227.2 |
558.4 |
0.9876 |
106.8 |
2088 |
2152 |
02-11-8 |
2270.8 |
569.5 |
1.0044 |
105.4 |
2152 |
2216 |
02-11-15 |
2276.8 |
564.9 |
1.0084 |
104.8 |
2120 |
2200 |
02-11-22 |
2338.0 |
571.2 |
1.0021 |
105.7 |
2164 |
2224 |
02-11-29 |
2376.6 |
575.8 |
0.9940 |
106.5 |
2200 |
2280 |
02-12-6 |
2457.6 |
566.9 |
1.0003 |
106.0 |
2356 |
2366 |
02-12-13 |
2451.8 |
568.3 |
1.0136 |
104.9 |
2380 |
2384 |
02-12-20 |
2449.6 |
560.7 |
1.0258 |
103.6 |
2400 |
2412 |
02-12-27 |
2514.8 |
570.8 |
1.0327 |
103.1 |
2424 |
2456 |
03-1-3 |
2582.3 |
572.3 |
1.0438 |
102.4 |
2420 |
2460 |
03-1-10 |
2683.8 |
575.1 |
1.0487 |
101.9 |
2436 |
2460 |
03-1-17 |
2522.4 |
550.5 |
1.0573 |
101.1 |
2472 |
2460 |
03-1-24 |
2509.0 |
561.6 |
1.0751 |
100.0 |
2390 |
2444 |
03-1-29 |
2508.7 |
567.4 |
1.0838 |
99.4 |
2400 |
2460 |
03-2-14 |
2563.6 |
569.2 |
1.0765 |
100.1 |
2420 |
2460 |
03-2-21 |
2614.5 |
571.9 |
1.0759 |
99.9 |
2420 |
2460 |
03-2-28 |
2657.6 |
577.3 |
1.0784 |
99.7 |
2440 |
2464 |
03-3-7 |
2578.2 |
569.0 |
1.0946 |
98.5 |
2460 |
2476 |
03-3-14 |
2643.2 |
570.4 |
1.0926 |
98.5 |
2396 |
2468 |
03-3-21 |
2695.2 |
573.0 |
1.0580 |
101.0 |
2434 |
2480 |
03-3-28 |
2706.0 |
573.6 |
1.0688 |
100.7 |
2454 |
2494 |
03-4-4 |
2711.2 |
582.1 |
1.0813 |
99.8 |
2510 |
2540 |
03-4-11 |
2746.2 |
601.2 |
1.0739 |
100.5 |
2500 |
2550 |
03-4-18 |
2768.0 |
614.5 |
1.0846 |
99.5 |
2500 |
2550 |
03-4-25 |
2727.2 |
606.2 |
1.0980 |
98.7 |
2552 |
2606 |
03-4-30 |
2762.0 |
617.7 |
1.9660 |
97.8 |
2570 |
2620 |
03-5-16 |
2752.8 |
645.2 |
1.1473 |
94.7 |
2590 |
2620 |
03-5-23 |
2736.8 |
634.8 |
1.1710 |
93.3 |
2590 |
2620 |
03-5-30 |
2672.8 |
627.0 |
1.1812 |
93.3 |
2576 |
2604 |
03-6-6 |
2643.4 |
617.7 |
1.1736 |
93.5 |
2538 |
2580 |
03-6-13 |
2690.6 |
625.6 |
1.1751 |
93.0 |
2530 |
2580 |
03-6-20 |
2675.6 |
625.3 |
1.1723 |
93.1 |
2530 |
2580 |
03-6-27 |
2660.0 |
633.7 |
1.1490 |
94.5 |
2520 |
2560 |
03-7-4 |
2676.8 |
616.0 |
1.1519 |
94.4 |
2520 |
2560 |
03-7-11 |
2689.8 |
607.7 |
1.1330 |
95.5 |
2520 |
2560 |
03-7-18 |
2631.8 |
579.9 |
1.1223 |
96.6 |
2516 |
2560 |
03-7-25 |
2592.4 |
554.6 |
1.1428 |
95.8 |
2500 |
2560 |
03-8-1 |
2397.2 |
534.4 |
1.1356 |
96.1 |
2500 |
2560 |
03-8-8 |
2415.2 |
524.6 |
1.1351 |
96.1 |
2500 |
2560 |
03-8-15 |
2448.8 |
547.7 |
1.1297 |
96.3 |
2500 |
2560 |
03-8-22 |
2500.4 |
578.8 |
1.1042 |
97.9 |
2512 |
2560 |
03-8-29 |
2495.4 |
584.6 |
1.0893 |
98.0 |
2520 |
2560 |
03-9-5 |
2496.0 |
585.3 |
1.0932 |
78.6 |
2520 |
2564 |
03-9-12 |
2516.0 |
604.6 |
1.1189 |
96.6 |
2530 |
2580 |
03-9-19 |
2597.4 |
622.4 |
1.1268 |
95.9 |
2564 |
2628 |
03-9-26 |
2654.6 |
653.7 |
1.1477 |
93.8 |
2580 |
2630 |
03-9-30 |
2749.6 |
674.1 |
1.1630 |
92.8 |
2580 |
2630 |
03-10-10 |
2844.7 |
694.4 |
1.1783 |
91.7 |
2497 |
2700 |
03-10-17 |
3035.8 |
731.2 |
1.1664 |
92.2 |
2716 |
2806 |
03-10-24 |
3155.6 |
747.0 |
1.1733 |
91.8 |
2880 |
3086 |
03-10-31 |
3273.6 |
784.5 |
1.1658 |
92.0 |
2936 |
3150 |
03-11-7 |
3201.6 |
769.4 |
1.1465 |
93.5 |
2932 |
3170 |
03-11-14 |
3057.4 |
772.7 |
1.1631 |
92.2 |
2842 |
3130 |
03-11-21 |
2912.8 |
763.6 |
1.1884 |
90.8 |
2858 |
3090 |
03-11-28 |
2861.6 |
746.0 |
1.1871 |
90.9 |
2860 |
3058 |
03-12-5 |
2978.8 |
768.4 |
1.2079 |
89.6 |
2860 |
3028 |
03-12-12 |
3018.4 |
777.8 |
1.2232 |
88.7 |
2860 |
3020 |
03-12-19 |
2945.2 |
766.0 |
1.2367 |
88.2 |
2880 |
3100 |
03-12-26 |
2934.0 |
761.5 |
1.2419 |
87.8 |
2900 |
3100 |
04-1-2 |
3030.8 |
790.3 |
1.2547 |
86.9 |
2900 |
3100 |
04-1-9 |
3046.4 |
796.3 |
1.2734 |
85.6 |
2912 |
3100 |
04-1-16 |
3100.4 |
834.7 |
1.2623 |
86.3 |
2924 |
3100 |
04-1-30 |
3030.5 |
814.2 |
1.2430 |
87.0 |
2940 |
3100 |
04-2-6 |
3039.2 |
814.6 |
1.2538 |
86.8 |
2956 |
3100 |
04-2-13 |
3125.2 |
834.2 |
1.2750 |
85.6 |
2960 |
3100 |
04-2-20 |
3191.3 |
869.6 |
1.2676 |
86.1 |
2960 |
3100 |
04-2-27 |
3327.2 |
928.0 |
1.2559 |
87.1 |
2996 |
3132 |
04-3-5 |
3402.0 |
940.6 |
1.2273 |
88.5 |
3100 |
3352 |
04-3-12 |
3364.2 |
937.3 |
1.2304 |
88.6 |
3232 |
3402 |
04-3-19 |
3417.4 |
1000.8 |
1.2277 |
88.4 |
3276 |
3460 |
04-3-26 |
3552.0 |
1034.6 |
1.2212 |
88.5 |
3360 |
3538 |
04-4-2 |
3501.4 |
1019.8 |
1.2222 |
88.1 |
3532 |
3644 |
04-4-8 |
3533.8 |
1009.4 |
1.2088 |
88.8 |
3556 |
3692 |
04-4-16 |
3357.6 |
975.9 |
1.1988 |
89.8 |
3560 |
3692 |
04-4-23 |
3275.6 |
954.4 |
1.1892 |
90.6 |
3584 |
3680 |
04-4-30 |
3223.6 |
1002.5 |
1.1918 |
90.8 |
3592 |
3680 |
04-5-14 |
3168.0 |
984.3 |
1.1862 |
91.6 |
3600 |
3680 |
04-5-21 |
2965.2 |
885.6 |
1.1981 |
90.8 |
3592 |
3658 |
04-5-28 |
2959.0 |
851.4 |
1.2140 |
89.5 |
3564 |
3610 |
04-6-4 |
2985.0 |
839.6 |
1.2239 |
88.8 |
3500 |
3600 |
04-6-11 |
2898.0 |
848.8 |
1.2146 |
89.1 |
3470 |
3600 |
04-6-18 |
2876.8 |
872.4 |
1.2085 |
89.5 |
3450 |
3600 |
04-6-25 |
2885.0 |
907.2 |
1.2123 |
89.1 |
3420 |
3540 |
04-7-2 |
2915.8 |
857.4 |
1.2189 |
88.7 |
3400 |
3500 |
04-7-9 |
2825.4 |
815.5 |
1.2345 |
87.8 |
3250 |
3350 |
04-7-16 |
2761.8 |
758.6 |
1.2380 |
87.6 |
3210 |
3338 |
04-7-23 |
2713.2 |
693.4 |
1.2269 |
88.2 |
3150 |
3330 |
04-7-30 |
2667.0 |
637.0 |
1.2061 |
89.7 |
3150 |
3330 |
04-8-6 |
2630.2 |
571.6 |
1.2093 |
89.4 |
3150 |
3330 |
04-8-13 |
2596.8 |
578.1 |
1.2269 |
88.5 |
3150 |
3330 |
04-8-20 |
2615.8 |
591.9 |
1.2343 |
87.9 |
3150 |
3330 |
04-8-27 |
2687.0 |
616.6 |
1.2085 |
89.4 |
3120 |
3250 |
04-9-3 |
2749.0 |
624.9 |
1.2127 |
89.2 |
2980 |
3250 |
04-9-10 |
2748.2 |
586.6 |
1.2160 |
89.0 |
2900 |
3250 |
04-9-17 |
2719.8 |
562.4 |
1.2208 |
88.8 |
2780 |
3250 |
04-9-24 |
2674.8 |
537.2 |
1.2257 |
88.4 |
2748 |
3230 |
04-9-30 |
2676.0 |
531.9 |
1.2360 |
87.8 |
2830 |
3150 |
04-10-8 |
2674.0 |
528.4 |
1.2412 |
87.5 |
2800 |
3050 |
04-10-15 |
2634.8 |
522.0 |
1.2380 |
87.6 |
2716 |
2910 |
04-10-22 |
2611.4 |
526.5 |
1.2573 |
86.4 |
2568 |
2620 |
04-10-29 |
2639.2 |
533.5 |
1.2759 |
85.2 |
2532 |
2550 |
04-11-5 |
2627.0 |
515.2 |
1.2809 |
84.7 |
2568 |
2550 |
04-11-12 |
2637.2 |
517.1 |
1.2919 |
84.1 |
2600 |
2550 |
04-11-19 |
2633.0 |
546.9 |
1.2985 |
83.6 |
2584 |
2566 |
04-11-26 |
2659.2 |
554.3 |
1.3165 |
82.5 |
2580 |
2560 |
04-12-3 |
2591.2 |
529.7 |
1.3317 |
81.6 |
2580 |
2600 |
04-12-10 |
2582.8 |
528.0 |
1.3350 |
81.9 |
2580 |
2600 |
04-12-17 |
2636.2 |
547.3 |
1.3307 |
82.1 |
2580 |
2600 |
04-12-24 |
2640.6 |
549.1 |
1.3433 |
81.6 |
2560 |
2600 |
04-12-31 |
2618.2 |
549.9 |
1.3599 |
80.8 |
2560 |
2720 |
05-1-7 |
2587.0 |
532.8 |
1.3196 |
83.0 |
2560 |
2720 |
05-1-14 |
2609.8 |
536.2 |
1.3157 |
82.8 |
2568 |
2730 |
05-1-21 |
2586.3 |
517.7 |
1.3000 |
83.5 |
2560 |
2730 |
05-1-28 |
2575.4 |
519.7 |
1.3033 |
83.5 |
2560 |
2730 |
05-2-4 |
2533.8 |
505.6 |
1.2992 |
83.8 |
2540 |
2730 |
05-2-18 |
2598.0 |
546.3 |
1.3061 |
83.6 |
2540 |
2730 |
05-2-25 |
2678.3 |
580.0 |
1.3229 |
82.7 |
2542 |
2730 |
05-3-4 |
2832.6 |
619.2 |
1.3182 |
82.8 |
2580 |
2758 |
05-3-11 |
2939.2 |
634.5 |
1.3369 |
81.9 |
2740 |
2800 |
05-3-18 |
3149.2 |
666.2 |
1.3352 |
81.9 |
2768 |
2830 |
05-3-24 |
3058.3 |
626.4 |
1.3042 |
83.6 |
2760 |
2850 |
05-4-1 |
3093.6 |
626.4 |
1.2921 |
84.3 |
2760 |
2850 |
05-4-8 |
3071.8 |
618.1 |
1.2885 |
84.7 |
2760 |
2850 |
05-4-15 |
3042.2 |
618.1 |
1.2908 |
84.5 |
2760 |
2850 |
05-4-22 |
3063.2 |
634.6 |
1.3057 |
83.7 |
2760 |
2850 |
05-4-29 |
3087.8 |
634.1 |
1.2932 |
84.1 |
2760 |
2850 |
05-5-13 |
3067.2 |
628.1 |
1.2765 |
85.1 |
2744 |
2850 |
05-5-20 |
3025.8 |
627.7 |
1.2622 |
86.2 |
2740 |
2850 |
05-5-27 |
3099.0 |
659.1 |
1.2570 |
86.5 |
2724 |
2850 |
05-6-3 |
3105.3 |
677.3 |
1.2254 |
88.0 |
2740 |
2850 |
05-6-10 |
3105.4 |
671.8 |
1.2222 |
88.0 |
2740 |
2850 |
05-6-17 |
3103.6 |
699.4 |
1.2125 |
88.6 |
2740 |
2850 |
05-6-24 |
3184.6 |
736.3 |
1.2114 |
88.6 |
2760 |
2850 |
05-7-1 |
3008.4 |
671.9 |
1.2070 |
89.2 |
2778 |
2850 |
05-7-8 |
3051.3 |
694.7 |
1.1932 |
90.4 |
2770 |
2850 |
05-7-15 |
3047.8 |
708.8 |
1.2103 |
89.4 |
2770 |
2850 |
05-7-22 |
2961.0 |
684.5 |
1.2093 |
89.7 |
2770 |
2850 |
05-7-29 |
2897.4 |
675.0 |
1.2084 |
89.6 |
2770 |
2850 |
05-8-5 |
2861.4 |
672.7 |
1.2288 |
88.3 |
2762 |
2850 |
05-8-12 |
2800.0 |
647.2 |
1.2399 |
87.5 |
2750 |
2850 |
05-8-19 |
2702.8 |
610.2 |
1.2266 |
88.0 |
2746 |
2850 |
05-8-26 |
2677.4 |
599.6 |
1.2260 |
87.9 |
2740 |
2850 |
05-9-2 |
2688.2 |
592.9 |
1.2363 |
87.4 |
2740 |
2850 |
05-9-9 |
2711.4 |
595.5 |
1.2444 |
86.7 |
2740 |
2850 |
05-9-16 |
2695.0 |
578.1 |
1.2240 |
87.8 |
2728 |
2850 |
05-9-23 |
2710.8 |
576.0 |
1.2134 |
88.6 |
2696 |
2850 |
05-9-30 |
2685.2 |
564.3 |
1.2031 |
89.4 |
2520 |
2810 |
05-10-14 |
2703.6 |
577.1 |
1.2040 |
89.6 |
2500 |
2550 |
05-10-21 |
2710.2 |
584.5 |
1.1991 |
90.0 |
2500 |
2550 |
05-10-28 |
2644.8 |
572.1 |
1.2070 |
89.5 |
2460 |
2550 |
05-11-4 |
2634.6 |
576.7 |
1.1966 |
90.3 |
2442 |
2550 |
05-11-11 |
2642.2 |
583.1 |
1.1760 |
91.6 |
2440 |
2550 |
05-11-18 |
2697.4 |
582.7 |
1.1715 |
92.1 |
2440 |
2550 |
05-11-25 |
2621.8 |
570.8 |
1.1747 |
91.8 |
2440 |
2550 |
05-12-2 |
2546.2 |
558.9 |
1.1778 |
91.6 |
2350 |
2500 |
05-12-9 |
2579.6 |
566.6 |
1.1792 |
91.4 |
2350 |
2470 |
05-12-16 |
2679.4 |
590.5 |
1.1974 |
90.1 |
2350 |
2450 |
05-12-23 |
2737.0 |
608.9 |
1.1888 |
90.6 |
2350 |
2450 |
05-12-30 |
2732.0 |
605.4 |
1.1832 |
91.1 |
2350 |
2450 |
06-1-9 |
2724.3 |
592.8 |
1.1961 |
90.2 |
2350 |
2450 |
06-1-13 |
2716.5 |
580.2 |
1.2089 |
89.2 |
2350 |
2450 |
06-1-20 |
2667.8 |
567.7 |
1.2104 |
89.2 |
2360 |
2450 |
06-1-27 |
2699.8 |
574.8 |
1.2230 |
88.5 |
2400 |
2450 |
06-2-10 |
2740.0 |
581.7 |
1.1953 |
90.4 |
2400 |
2450 |
06-2-17 |
2740.0 |
589.3 |
1.1901 |
90.6 |
2408 |
2510 |
06-2-24 |
2754.3 |
577.9 |
1.1905 |
90.6 |
2420 |
2600 |
06-3-3 |
2749.4 |
595.1 |
1.1954 |
90.0 |
2420 |
2600 |
06-3-10 |
2759.6 |
590.5 |
1.1923 |
90.6 |
2420 |
2600 |
06-3-17 |
2748.4 |
581.8 |
1.2074 |
89.7 |
2420 |
2600 |
06-3-24 |
2720.2 |
574.8 |
1.2067 |
89.8 |
2404 |
2600 |
06-3-31 |
2727.0 |
580.4 |
1.2063 |
89.9 |
2368 |
2600 |
06-4-7 |
2671.8 |
561.2 |
1.2206 |
89.2 |
2360 |
2600 |
06-4-13 |
2636.0 |
560.3 |
1.2113 |
89.5 |
2360 |
2600 |
06-4-21 |
2658.6 |
575.0 |
1.2320 |
88.2 |
2348 |
2564 |
06-4-28 |
2685.0 |
592.6 |
1.2490 |
87.0 |
2300 |
2420 |
06-5-12 |
2800.6 |
607.2 |
1.2805 |
84.5 |
2316 |
2420 |
06-5-19 |
2822.0 |
599.2 |
1.2799 |
84.6 |
2340 |
2420 |
06-5-26 |
2808.0 |
583.6 |
1.2788 |
84.8 |
2340 |
2420 |
06-6-2 |
2822.5 |
589.6 |
1.2850 |
84.5 |
2324 |
2420 |
06-6-9 |
2860.0 |
593.4 |
1.2769 |
85.1 |
2300 |
2420 |
06-6-16 |
2836.2 |
595.5 |
1.2600 |
86.1 |
2300 |
2420 |
06-6-23 |
2806.4 |
604.8 |
1.2583 |
86.3 |
2288 |
2420 |
06-6-30 |
2784.2 |
607.0 |
1.2629 |
86.2 |
2264 |
2420 |
06-7-7 |
2804.3 |
628.3 |
1.2780 |
85.3 |
2256 |
2420 |
06-7-14 |
2681.0 |
627.7 |
1.2709 |
85.6 |
2236 |
2420 |
大连商品交易所 期货学院学员 陈佳蕴
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