{"id":1054,"date":"2023-09-01T16:19:05","date_gmt":"2023-09-01T08:19:05","guid":{"rendered":"https:\/\/cathayvista.top\/?p=1054"},"modified":"2025-01-08T23:15:59","modified_gmt":"2025-01-08T15:15:59","slug":"comac-arj21-zhen","status":"publish","type":"post","link":"https:\/\/cathayvista.top\/index.php\/2023\/09\/01\/comac-arj21-zhen\/","title":{"rendered":"\u4e2d\u56fd\u5546\u98deARJ21 \/ Comac ARJ21 – \uff08\u5168\u6587\uff09\u4e2d\u82f1\u6587\u7ef4\u57fa\u767e\u79d1\u8bcd\u6761\u878d\u5408"},"content":{"rendered":"\n
\n

\u4e2d\u6587\u8bcd\u6761\u53c2\u89c1\u94fe\u63a5\uff08\u65e0\u6cd5\u4ece\u4e2d\u56fd\u5185\u5730\u8bbf\u95ee\uff09\uff1a\u70b9\u51fb\u8fd9\u91cc\u8bbf\u95ee<\/a>\u3002
\u82f1\u6587\u8bcd\u6761\u53c2\u89c1\u94fe\u63a5\uff08\u65e0\u6cd5\u4ece\u4e2d\u56fd\u5185\u5730\u8bbf\u95ee\uff09\uff1a\u70b9\u51fb\u8fd9\u91cc\u8bbf\u95ee<\/a>\u3002
\u672c\u6587\u57fa\u4e8e\u82f1\u6587\u8bcd\u6761\u7684\u7ebf\u7d22\uff0c\u5e76\u8865\u5145\u90e8\u5206\u6765\u81ea\u4e2d\u6587\u8bcd\u6761\u7684\u5185\u5bb9\u3002\u8fbd\u89c2\u642c\u8fd0\u65f6\u8fdb\u884c\u4e86\u5fc5\u8981\u7684\u5408\u89c4\u5316\u5904\u7406\uff0c\u4ee5\u4f7f\u5176\u80fd\u591f\u5728\u4e2d\u56fd\u5185\u5730\u4e0a\u4f20\u3002<\/p>\n\n\n\n

\u7ef4\u57fa\u767e\u79d1\uff08Wikipedia\uff09\u662f\u7f8e\u56fd\u7ef4\u57fa\u5a92\u4f53\u57fa\u91d1\u4f1a\u7684\u4e92\u8054\u7f51\u767e\u79d1\u9879\u76ee\uff0c\u5176\u5185\u5bb9\u53ef\u80fd\u53d7\u5230\u7acb\u573a\u3001\u4fe1\u606f\u6765\u6e90\u7b49\u56e0\u7d20\u5f71\u54cd\uff0c\u8bf7\u5ba2\u89c2\u770b\u5f85\u3002\u6b63\u6587\u5185\u5bb9\u4e0d\u4ee3\u8868\u8bd1\u8005\u89c2\u70b9\u3002<\/p>\n\n\n\n

\u8fbd\u89c2\u63d0\u4f9b\u7684\u8bd1\u6587\u4ec5\u4f9b\u53c2\u8003\u3002\u6587\u4e2d\u53ef\u80fd\u5305\u542b\u65e0\u6cd5\u4ece\u4e2d\u56fd\u5185\u5730\u8bbf\u95ee\u7684\u94fe\u63a5\u3002<\/p>\n\u8fbd\u89c2\u6240\u642c\u8fd0\u7684\u8bcd\u6761\u4e0e\u539f\u7ef4\u57fa\u767e\u79d1\u8bcd\u6761\u540c\u6837\u9075\u5faaCC-BY-SA 4.0\u534f\u8bae<\/a>\uff0c\u5728\u7b26\u5408\u534f\u8bae\u8981\u6c42\u7684\u60c5\u51b5\u4e0b\u60a8\u53ef\u4ee5\u514d\u8d39\u4f7f\u7528\u5176\u5185\u5bb9\uff08\u5305\u62ec\u5546\u7528\uff09\u3002\u56fe\u7247\u548c\u89c6\u9891\u53ef\u80fd\u9075\u5faa\u4e0d\u540c\u7684\u534f\u8bae\uff0c\u6211\u4eec\u4f1a\u5728\u6587\u4e2d\u7684\u5177\u4f53\u4f4d\u7f6e\u6807\u660e\uff1b\u534f\u8bae\u6587\u672c\u8bf7\u70b9\u51fb\u8fd9\u91cc\u8bbf\u95ee<\/a>\u3002<\/cite><\/blockquote>\n\n\n\n

0. \u6982\u8ff0<\/h2>\n\n\n\n

\u4e2d\u56fd\u5546\u98deARJ21<\/strong>\uff0c\u79d1\u7814\u4ee3\u53f7ARJ21<\/strong>\uff08\u5168\u5199\u4e3a\u201cAdvanced Regional Jet\u201d\uff0c\u5373\u201c21\u4e16\u7eaa\u65b0\u4e00\u4ee3\u652f\u7ebf\u98de\u673a\u201d\uff09\uff0c\u662f\u7531\u4e2d\u56fd\u5546\u7528\u98de\u673a\u6709\u9650\u8d23\u4efb\u516c\u53f8<\/a>\u7814\u5236\u7684\u4e2d\u77ed\u7a0b\u6da1\u6247<\/a>\u652f\u7ebf\u5ba2\u673a<\/a>\uff0c\u822a\u7a0b2,225\u81f33,700\u516c\u91cc[2]<\/a>\u3002\u201c\u7fd4\u51e4\u201d\u4e00\u540d\u901a\u8fc7\u516c\u5f00\u5f81\u96c6\u800c\u5f97[3]<\/a>[4]<\/a>\u3002\u622a\u81f32022\u5e7412\u6708\uff0cARJ21\u5df2\u4ea4\u4ed8\u8fd1\u767e\u67b6\uff0c\u5f00\u901a300\u591a\u6761\u822a\u7ebf\uff0c\u901a\u822a100\u591a\u5ea7\u57ce\u5e02\uff0c\u5b89\u5168\u8fd0\u9001\u65c5\u5ba2\u8d85560\u4e07\u4eba\u6b21[2]<\/a>\u3002<\/p>\n\n\n\n

ARJ21\u8bbe\u8ba1\u6709\u56db\u79cd\u4e0d\u540c\u7684\u673a\u578b\uff0c\u5ba2\u673a\u578b\u80fd\u8bbe\u7f6e78\uff0d90\u4e2a\u5ea7\u4f4d\u3002ARJ21\u9879\u76ee\u4e8e2002\u5e744\u6708\u7ecfguo2 wu4 yuan4\u6279\u51c6\u5f00\u59cb\u7acb\u9879\u7814\u5236\u3002ARJ21\u57282008\u5e7411\u670828\u65e5\u5728\u4e0a\u6d77\u5927\u573a\u673a\u573a<\/a>\u5b8c\u6210\u9996\u98de\uff0c\u5e76\u4e8e2009\u5e747\u670815\u65e5\u8f6c\u573a\u4e2d\u56fd\u98de\u884c\u8bd5\u9a8c\u7814\u7a76\u9662<\/a>\u8fdb\u884c\u5168\u9762\u8bd5\u98de\u3002\u7ecf\u8fc7\u4e94\u5e74\u7684\u5bc6\u96c6\u6d4b\u8bd5\uff0c2014\u5e7412\u670830\u65e5\uff0cARJ21-700\u83b7\u5f97\u4e86\u4e2d\u56fd\u6c11\u822a\u5c40<\/a>\u9881\u53d1\u7684\u578b\u53f7\u5408\u683c\u8bc1\u4e66[5]<\/a>\u3002<\/p>\n\n\n\n

Resembling theMcDonnell Douglas MD-80<\/a>\/MD-90<\/a>[5]<\/a>[6]<\/a>produced under licence in China, it features a 25\u00b0swept<\/a>,supercritical<\/a>wing designed byAntonov<\/a>and twin rear-mountedGeneral Electric CF34<\/a>engines. 100 airframes had been delivered by the end of 2022.[3]<\/a>[4]<\/a>[7]<\/a>
\u53c2\u8003\u8bd1\u6587\uff1a\u8be5\u98de\u673a\u4e0e\u5728\u4e2d\u56fd\u8bb8\u53ef\u751f\u4ea7\u7684\u9ea6\u9053MD-80\/MD-90[5][6]\u76f8\u4f3c\uff0c\u5b83\u91c7\u7528\u4e86\u5b89\u4e1c\u8bfa\u592b\u8bbe\u8ba1\u768425\u00b0\u540e\u63a0\u8d85\u4e34\u754c\u673a\u7ffc\uff0c\u5e76\u642d\u8f7d\u4e86\u4e24\u53f0\u901a\u7528\u7535\u6c14CF34\u53d1\u52a8\u673a\uff0c\u540e\u7f6e\u5b89\u88c5\u5728\u673a\u8eab\u5c3e\u90e8\u3002\u622a\u81f32022\u5e74\u5e95\uff0c\u5df2\u4ea4\u4ed8100\u67b6\u98de\u673a[3][4][7]\u3002<\/em><\/p>\n\n\n\n

\u672c\u578b\u542f\u52a8\u5ba2\u6237<\/a>\u662f\u4e2d\u56fd\u5546\u98de<\/a>\u65d7\u4e0b\u7684\u5b50\u516c\u53f8\u6210\u90fd\u822a\u7a7a<\/a>\uff0c\u9996\u673a\u4e8e2015\u5e7411\u670829\u65e5\u5b8c\u6210\u4ea4\u4ed8[6]<\/a>\u30022016\u5e746\u670828\u65e511\u70b937\u5206\uff0c\u6210\u90fd\u822a\u7a7aEU6679\u5728\u4e0a\u6d77\u8679\u6865\u673a\u573a\u6210\u529f\u843d\u5730\uff0c\u6807\u5fd7\u7740ARJ21\u5b8c\u6210\u9996\u6b21\u5546\u4e1a\u8fd0\u8425\u98de\u884c[7]<\/a>\u3002\u622a\u81f32021\u5e741\u6708\uff0c\u6210\u90fd\u822a\u7a7aARJ21\u673a\u961f\u62e5\u670923\u67b6\u8be5\u673a\u578b\u5ba2\u673a\uff0c\u673a\u961f\u7d2f\u8ba1\u8fd0\u9001\u65c5\u5ba2\u8d85135\u4e07\u4eba\u6b21\uff0c\u5f00\u901a\u822a\u7ebf62\u6761\uff0c\u901a\u822a\u57ce\u5e02\u8fbe\u523047\u5ea7[8]<\/a>\u3002<\/p>\n\n\n\n

2022\u5e7412\u670818\u65e5\uff0c\u4e2d\u56fd\u5546\u98de\u5c06ARJ21-700\u4ea4\u4ed8\u7ed9\u5370\u5c3c\u7fce\u4e9a\u822a\u7a7a<\/a>\uff0c\u8fd9\u662f\u4e2d\u56fd\u7684\u55b7\u6c14\u5f0f\u5ba2\u673a<\/a>\u9996\u6b21\u8fdb\u5165\u56fd\u9645\u5e02\u573a[2]<\/a>\u3002<\/p>\n\n\n\n

\u7c7b\u578b<\/td>\u7a84\u4f53\u55b7\u6c14\u652f\u7ebf\u98de\u673a<\/td><\/tr>
\u539f\u4ea7\u56fd<\/td>\u4e2d\u534e\u4eba\u6c11\u5171\u548c\u56fd<\/td><\/tr>
\u5236\u9020\u5546<\/td>\u4e2d\u56fd\u5546\u7528\u98de\u673a\u6709\u9650\u8d23\u4efb\u516c\u53f8<\/td><\/tr>
\u9996\u98de<\/td>2008\u5e7411\u670828\u65e5<\/td><\/tr>
\u670d\u5f79<\/td>2016\u5e746\u670828\u65e5\uff08\u6210\u90fd\u822a\u7a7a\uff09<\/td><\/tr>
\u72b6\u6001<\/td>\u751f\u4ea7\u4e2d\uff0c\u4f7f\u7528\u4e2d<\/td><\/tr>
Produced \u751f\u4ea7\u65f6\u95f4<\/td>2007\u2013present[3] 2007\u5e74\u81f3\u4eca<\/td><\/tr>
\u5236\u9020\u6570\u91cf<\/td>100\uff0b\u67b6\uff082022\u5e7412\u6708\uff09<\/td><\/tr>
\u5355\u4f4d\u6210\u672c<\/td>3,800\u4e07\u7f8e\u5143\uff082019\u5e74\uff09[1]<\/td><\/tr>
\u53d1\u5c55\u81ea<\/td>\u9ea6\u9053MD-80<\/td><\/tr>
Number built \u5236\u9020\u6570\u91cf<\/td>At least 114 (as of 31 July 2023)[3][4] \u622a\u81f32023\u5e747\u670831\u65e5\uff0c\u81f3\u5c11114\u67b6<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

1. \u53d1\u5c55\u5386\u7a0b | Development<\/h2>\n\n\n\n

1.1 \u7acb\u9879\u4e0e\u65e9\u671f\u5f00\u53d1<\/h3>\n\n\n\n

The development of the ARJ21 (Advanced Regional Jet) is a key project in the “10th Five-Year Plan”<\/a> of China<\/a>. It began in March 2002 and was led by the state-owned ACAC consortium<\/a>. The maiden flight of the ARJ21 was initially planned to take place in 2005 with commercial service beginning 18 months later.[8]<\/a> The programme became eight years behind schedule.[9]<\/a> The design work was delayed and the final trial production stage did not begin until June 2006.[10]<\/a>
\u53c2\u8003\u8bd1\u6587\uff1aARJ21\uff08\u9ad8\u7ea7\u5730\u533a\u55b7\u6c14\u673a\uff09\u7684\u7814\u53d1\u662f\u4e2d\u56fd\u201c\u7b2c\u5341\u4e2a\u4e94\u5e74\u8ba1\u5212\u201d\u7684\u91cd\u70b9\u9879\u76ee\u3002\u8be5\u9879\u76ee\u59cb\u4e8e2002\u5e743\u6708\uff0c\u7531\u56fd\u6709\u4f01\u4e1aACAC\uff08\u4e2d\u822a\u5546\u7528\u98de\u673a\u6709\u9650\u516c\u53f8\uff09\u8d1f\u8d23\u9886\u5bfc\u3002ARJ21\u7684\u9996\u98de\u6700\u521d\u8ba1\u5212\u4e8e2005\u5e74\u8fdb\u884c\uff0c\u5546\u4e1a\u8fd0\u8425\u5c06\u572818\u4e2a\u6708\u540e\u5f00\u59cb[8]\u3002\u8be5\u9879\u76ee\u7684\u8fdb\u5ea6\u5ef6\u8bef\u4e86\u516b\u5e74[9]\u3002\u8bbe\u8ba1\u5de5\u4f5c\u63a8\u8fdf\uff0c\u5e76\u4e14\u6b63\u5f0f\u7684\u8bd5\u751f\u4ea7\u9636\u6bb5\u76f4\u52302006\u5e746\u6708\u624d\u5f00\u59cb[10]\u3002<\/p>\n\n\n\n

2000\u5e74\uff0c\u56fd\u52a1\u9662\u529e\u516c\u4f1a\u8bae\u4e2d\u6307\u51fa\u8981\u96c6\u4e2d\u529b\u91cf\u53d1\u5c55\u56fd\u9645\u6c34\u5e73\u7684\u56fd\u4ea7\u652f\u7ebf\u5ba2\u673a[9]<\/a>\u30022002\u5e744\u6708\uff0c\u56fd\u52a1\u9662\u6279\u51c6ARJ21\u7acb\u9879\uff0c\u7531\u4e2d\u56fd\u4e00\u822a<\/a>\u8d1f\u8d23\u7814\u53d1[10]<\/a>\u30022003\u5e741\u6708\uff0cARJ21\u5411\u4e2d\u56fd\u6c11\u822a\u5c40<\/a>(CAAC)\u63d0\u51fa\u98de\u673a\u53f7\u5408\u683c\u8bc1TC\u7533\u8bf7\uff0c\u5f00\u59cb\u7b2c\u4e00\u6b21TC\u8ba1\u65f6\u3002\u7531\u4e8e\u6ca1\u80fd\u53ca\u65f6\u5b8c\u6210\uff0c\u8be5\u6b21\u7533\u8bf7\u4f5c\u5e9f\u30022003\u5e746\u670828\u65e5\uff0c\u4f4d\u4e8e\u897f\u5b89\u548c\u4e0a\u6d77\u7684\u4e24\u5bb6\u98de\u673a\u8bbe\u8ba1\u7814\u7a76\u6240\u5408\u5e76\u6210\u4e3a\u7b2c\u4e00\u98de\u673a\u8bbe\u8ba1\u7814\u7a76\u9662[11]<\/a>\u30022003\u5e7412\u670820\u65e5\uff0cARJ21\u5728\u4e0a\u6d77<\/a>\u3001\u897f\u5b89<\/a>\u3001\u6210\u90fd<\/a>\u3001\u6c88\u9633<\/a>\u56db\u5730\u540c\u65f6\u5f00\u5de5\u5236\u9020[12]<\/a>\u3002<\/p>\n\n\n\n

2005\u5e74\u5e95\u30012006\u5e74\u521d\uff0c\u98de\u673a\u7684\u6240\u6709\u7ed3\u6784\u3001\u7cfb\u7edf\u56fe\u7eb8\u5b8c\u6210\u53d1\u653e[13]<\/a>\u30022006\u5e749\u67089\u65e5\uff0c101\u67b6\u673a\u524d\u673a\u8eab\u90e8\u4ef6\u5728\u897f\u5b89\u4ea4\u4ed8[14]<\/a>\u3002\u540c\u5e7411\u6708\uff0c\u9996\u67b6\u53d1\u52a8\u673a\u540a\u6302\u5728\u6c88\u9633\u4ea4\u4ed8[15]<\/a>\u300212\u670820\u65e5\uff0c101\u67b6\u673a\u7684\u673a\u5934\u5728\u6210\u90fd\u4ea4\u4ed8[16]<\/a>\u30022007\u5e743\u67087\u65e5\uff0c101\u67b6\u673a\u673a\u7ffc\u548c\u4e2d\u673a\u8eab\u5728\u897f\u5b89\u4ea4\u4ed8[17]<\/a>\u30023\u670813\u65e5\uff0c101\u67b6\u673a\u5c3e\u6bb5\u5728\u6c88\u9633\u4ea4\u4ed8[18]<\/a>\u300212\u670821\u65e5\uff0c101\u67b6\u673a\u5728\u4e0a\u6d77\u5b8c\u6210\u603b\u88c5\u4e0b\u7ebf[19]<\/a>\u3002<\/p>\n\n\n\n

The first prototype (serial number 101) rolled out on 21 December 2007,[11]<\/a> with a maiden flight on 28 November 2008 at Shanghai’s Dachang Airfield.[citation needed<\/a><\/em>] The aircraft completed a long-distance test flight on 15 July 2009, flying from Shanghai<\/a> to Xi’an<\/a> in 2 hours 19 minutes, over a distance of 1,300 km. The second ARJ21 (serial number 102) completed the same test flight route on 24 August 2009. The third aircraft (serial number 103) similarly completed its first test flight on 12 September 2009.[12]<\/a> The fourth aircraft (CN 104) flew by November 2010. By August 2011, static, flutter and crosswind flight tests had been completed.[13]<\/a>
\u53c2\u8003\u8bd1\u6587\uff1a\u9996\u67b6\u539f\u578b\u673a\uff08\u5e8f\u53f7101\uff09\u4e8e2007\u5e7412\u670821\u65e5\u4eae\u76f8[11]\uff0c\u5e76\u57282008\u5e7411\u670828\u65e5\u5728\u4e0a\u6d77\u5927\u573a\u673a\u573a\u8fdb\u884c\u9996\u98de[\u5f85\u5f15\u8bc1\u6765\u6e90]\u3002\u8be5\u98de\u673a\u4e8e2009\u5e747\u670815\u65e5\u5b8c\u6210\u4e86\u4e00\u6b21\u957f\u8ddd\u79bb\u8bd5\u98de\uff0c\u98de\u884c\u65f6\u95f4\u4e3a2\u5c0f\u65f619\u5206\u949f\uff0c\u98de\u884c\u8ddd\u79bb\u4e3a1,300\u516c\u91cc\uff0c\u4ece\u4e0a\u6d77\u98de\u5f80\u897f\u5b89\u3002\u7b2c\u4e8c\u67b6ARJ21\uff08\u5e8f\u53f7102\uff09\u4e8e2009\u5e748\u670824\u65e5\u5b8c\u6210\u4e86\u76f8\u540c\u7684\u8bd5\u98de\u8def\u7ebf\u3002\u7b2c\u4e09\u67b6\u98de\u673a\uff08\u5e8f\u53f7103\uff09\u4e8e2009\u5e749\u670812\u65e5\u5b8c\u6210\u4e86\u9996\u6b21\u8bd5\u98de[12]\u3002\u7b2c\u56db\u67b6\u98de\u673a\uff08CN 104\uff09\u4e8e2010\u5e7411\u6708\u98de\u884c\u3002\u52302011\u5e748\u6708\uff0c\u9759\u6001\u3001\u98a4\u632f\u548c\u4fa7\u98ce\u8bd5\u98de\u5df2\u7ecf\u5b8c\u6210[13]\u3002<\/p>\n\n\n\n

\n
\u56fe1-1\u548c1-2\uff08\u53d1\u5e03\u4e8e\u77e5\u4e4e\u60f3\u6cd5\uff09<\/a><\/div>\n<\/div>\n\n\n\n

The ARJ21 is a small jet aircraft that looks similar to the MD-80,[5]<\/a> which was licensed to be built in China. COMAC claims that the ARJ21 is based on an original design, part of which was created by supercomputers in China.[14]<\/a> The ACAC consortium was reorganized in 2009 and became a part of COMAC<\/a>.[15]<\/a>
\u53c2\u8003\u8bd1\u6587\uff1aARJ21\u662f\u4e00\u6b3e\u5c0f\u578b\u55b7\u6c14\u98de\u673a\uff0c\u5916\u89c2\u4e0eMD-80\u7c7b\u4f3c[5]\uff0c\u8be5\u578b\u53f7\u83b7\u5f97\u4e86\u5728\u4e2d\u56fd\u751f\u4ea7\u7684\u8bb8\u53ef\u3002\u4e2d\u56fd\u5546\u98de\u58f0\u79f0ARJ21\u57fa\u4e8e\u539f\u521b\u8bbe\u8ba1\uff0c\u5176\u4e2d\u90e8\u5206\u8bbe\u8ba1\u662f\u7531\u4e2d\u56fd\u7684\u8d85\u7ea7\u8ba1\u7b97\u673a\u5b8c\u6210\u7684[14]\u3002ACAC\u96c6\u56e2\u4e8e2009\u5e74\u8fdb\u884c\u4e86\u91cd\u7ec4\u5e76\u6210\u4e3a\u4e2d\u56fd\u5546\u98de\u7684\u4e00\u90e8\u5206[15]\u3002<\/p>\n\n\n\n

2008\u5e744\u6708\uff0cARJ21\u5411CAAC\u548cFAA\u63d0\u4ea4\uff08\u7b2c\u4e8c\u6b21\uff09 TC\u7533\u8bf7\uff0cTC\u671f\u9650\u4e94\u5e74\u30022008\u5e745\u6708FAA<\/a>\u6b63\u5f0f\u901a\u77e5\u6279\u51c6\u53d7\u7406\uff0c \u8ba1\u65f6\u5f00\u59cb\u3002<\/p>\n\n\n\n

2008\u5e744\u67082\u65e5\u7b7e\u4e2d\u56fd\u6c11\u7528\u822a\u7a7a\u5c40\u4e0e\u7f8e\u56fd\u8054\u90a6\u822a\u7a7a\u5c40\u6c11\u7528\u822a\u7a7a\u6280\u672f\u5408\u4f5c\u534f\u8bae\u5907\u5fd8\u5f55\u30022009\u5e7411\u670817\u65e5\u4e2d\u56fd\u6c11\u7528\u822a\u7a7a\u5c40<\/a>\u4e0e\u7f8e\u56fd\u8054\u90a6\u822a\u7a7a\u5c40<\/a>\u6c11\u7528\u822a\u7a7a\u6280\u672f\u5408\u4f5c\u534f\u8bae\u5907\u5fd8\u5f55\u9644\u4ef6\u5341\u53ca\u5176\u9644\u5f55\u3002<\/p>\n\n\n\n

1.2 <\/strong>\u5173\u952e\u98de\u884c\u6d4b\u8bd5\u548c\u4e2d\u56fd\u6c11\u822a\u5c40\uff08CAAC\uff09\u7684\u8ba4\u8bc1 | Key flight tests and CAAC certification<\/h3>\n\n\n\n