CiA全称为“CAN in Automation－国际用户和厂商协会”，在德国Erlangen注册。CiA总部位于Erlangen，并由CiA董事会建立各个办事处。1992年，为促进CAN以及CAN协议的发展，欧洲的一些公司组成一个商业协会，提供CAN的技术、产品以及市场信息。到2002年6月时，共有约400家公司加入了这个协会，协作开发和支持各类CAN高层协议。经过近十年的发展，该协会已经为全球应用CAN技术的权威。CiA提供的各种服务有：
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.002863s ]
SELECT `a`.`aid`,`a`.`title`,`a`.`create_time`,`m`.`username` FROM `jrk_downrecords` `a` INNER JOIN `jrk_member` `m` ON `a`.`uid`=`m`.`id` WHERE `a`.`status` = 1 GROUP BY `a`.`aid` ORDER BY `a`.`create_time` DESC LIMIT 10 [ RunTime:0.076947s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.002986s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001206s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001400s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003365s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001321s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003650s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.021037s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001091s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 559202 [ RunTime:0.018108s ]
