ï»?!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> 烟台工控,合信PLC,合信伺服,合信自动åŒ?/title> <meta name="keywords" content="烟台工控,合信PLC,合信伺服,合信自动åŒ? /> <meta http-equiv="Content-Type" content="text/html; charset=gbk" /> <meta http-equiv="Content-Style-Type" content="text/css" /> <meta name="description" content="About us page - download free business website template at TemplateMonster.com."/> <link href="style.css" rel="stylesheet" type="text/css" /> <link href="layout.css" rel="stylesheet" type="text/css" /> <script src="maxheight.js" type="text/javascript"></script> <!--[if lt IE 7]> <link href="ie_style.css" rel="stylesheet" type="text/css" /> <![endif]--> <meta http-equiv="Cache-Control" content="no-transform" /> <meta http-equiv="Cache-Control" content="no-siteapp" /> </head> <body id="page2" onload="new ElementMaxHeight();"> <div style="position:fixed;left:-9000px;top:-9000px;"><sup id="ui0sy"></sup><xmp id="ui0sy"></xmp><tt 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<li><a href="contact-us.html" class="last"><em><b>联系我们</b></em></a></li> </ul> </div> </div> </div> <!-- nav box end --> </div> </div> </div> <!-- content --> <div id="content"> <div class="container"> <!-- main-banner-small begin --> <div class="main-banner-small"> <div class="inner"> <h1>专业PLC触摸屏编½E?</h1> </div> </div> <!-- main-banner-small end --> <div class="section"> <!-- box begin --> <div class="box"> <div class="border-top"> <div class="border-right"> <div class="border-bot"> <div class="border-left"> <div class="left-top-corner"> <div class="right-top-corner"> <div class="right-bot-corner"> <div class="left-bot-corner"> <div class="inner"> <h2>公司½Ž€ä»?/h2> 烟台瀚青甉|°”自动化有限公司是一家专注于工业自动化高¿U‘技控制¾pȝ»Ÿçš„设计、安装、调试及工业自动化äñ”品的生äñ”、代理、销售、传动电气äñ”品维修的高科技公司。公åæ€»¥ä¸“业的技术团队äؓ基础åQŒç»“合在工业自动化领域的深厚¿U¯ç¯åQŒä»¥å¿«é€Ÿå®žçŽ°å®¢æˆ·å®šåˆ¶åŒ–解决æ–ÒŽ¡ˆä¸ºç›®æ ‡ï¼Œå®žçŽ°ä¼ä¸šä»·å€¹{€å‘˜å·¥ä­hå€ég¸Žå®¢æˆ·ä»·å€¼çš„共同成长ã€? </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> <!-- box end --> </div> <div class="section"> <!-- box begin --> <div class="box"> <div class="border-top"> <div class="border-right"> <div class="border-bot"> <div class="border-left"> <div class="left-top-corner"> <div class="right-top-corner"> <div class="right-bot-corner"> <div class="left-bot-corner"> <div class="inner"> <h2><a href="PLCanli.html"><em><b>PLC案例</b></em></a></h2> <h2><a href="partners.html"><em><b>变频器案åˆ?/b></em></a></h2> <DIV id=left> <H3 class=title><SPAN> 普传PI9000¾pÕdˆ—变频器用于压铸机的节能改é€?/SPAN></H3> <DIV class=webcontent> <DIV id=showproduct> <H1 align="center" class=title>普传PI9000¾pÕdˆ—变频器用于压铸机的节能改é€?/H1> <DIV style="CLEAR: both"></DIV> <P><span style="white-space:nowrap;">前言</span><br /> <p> <span style="white-space:nowrap;">对于压铸制品行业来说åQŒç”µè€—是其生产成本构成的主要部分åQŒè€ŒåŽ‹é“¸æœºæ˜¯åˆ¶å“åŽ‚的主è¦?/span><span style="white-space:nowrap;">能耗设备之一åQŒäh¿U°ç”µè€è™Žã€‚因而降低压铸机çš?/span> </p> <p> <span style="white-space:nowrap;">能耗成为压铸行业降低成本,提高产品竞争</span><span style="white-space:nowrap;">力的有效途径ã€?/span> </p> <span style="white-space:nowrap;">一、压铸行业简˜q?/span><br /> <p> <span style="white-space:nowrap;">目前¾lå¤§å¤šæ•°çš„压铸机都属于液压传动压铸机åQŒæ¶²åŽ‹ä¼ åŠ¨ç³»¾lŸä¸­çš„动力由甉|œºå¸¦åŠ¨æ²ÒŽÜ‡</span><span style="white-space:nowrap;">提供。在压铸周期˜q‡ç¨‹ä¸­çš„变化åQŒåŽ‹é“¸æœºåœ¨ä¸</span> </p> <p> <span style="white-space:nowrap;">同工序下需要的‹¹é‡å’ŒåŽ‹åŠ›ä¸åŒï¼Œå¿…须依靠‹¹?/span><span style="white-space:nowrap;">量阀和压力阀来调节不同工序所™åȝš„不同‹¹é‡å’ŒåŽ‹åŠ›ã€‚åƈ且当负荷变化比较大时åQŒç”±äº?/span> </p> <p> <span style="white-space:nowrap;">定量</span><span style="white-space:nowrap;">泵不可调节输出功率,因此多余的能量只能消耗在挡板、æÑa路泄漏、æÑa温的升高中,也加å‰?/span><span style="white-space:nowrap;">了各¿Ué˜€çš„磨损、又造成æ²ÒŽ¸©˜q‡é«˜ã€?/span> </p> <p> <span style="white-space:nowrap;">甉|œºå™ªéŸ³˜q‡å¤§ã€ä»¥åŠæœºæ¢°å¯¿å‘½ç¾ƒçŸ­ç­‰çŽ°è±¡ã€‚åƈ且通常åœ?/span><span style="white-space:nowrap;">设计甉|œºçš„容量时比实际需要高出很多,存在“大马拉ž®èžR”的现象åQŒé€ æˆç”µèƒ½</span> </p> <p> <span style="white-space:nowrap;">的大量浪贏V€?/span><span style="white-space:nowrap;">因此推广变频器在压铸æœÞZ¸Šçš„应用,对于减少能源‹¹ªè´¹å…ähœ‰é‡è¦æ„ä¹‰ã€?/span> </p> <p> <span style="white-space:nowrap;">二、压铸机液压¾pȝ»ŸåŽŸç†æ¦‚è¿°</span> </p> <p> <span style="white-space:nowrap;"><img alt="" src="images/20130802104358_58138.jpg" /><br /> </span> </p> <p> <span style="white-space:nowrap;"><span style="white-space:nowrap;">1、压铸机工作原理概述</span><br /> <span style="white-space:nowrap;">全液压式压铸机是一¿Uå…¸åž‹çš„周期性工作制讑֤‡åQŒåœ¨ä¸€ä¸ªå®Œæ•´çš„工作周期(工序˜q‡ç¨‹)å¤?/span><span style="white-space:nowrap;">致可分äؓ锁模åQŒç»™æ±¤ï¼ŒæŠ¼å°„åQŒæŠ½èŠ¯ï¼Œå¼€æ¨¡ï¼Œ™å‰™’ˆåQ?/span></span> </p> <p> <span style="white-space:nowrap;"><span style="white-space:nowrap;">冷却åQŒè“„压等几个阶段åQŒå„个阶ŒDµéƒ½æ˜¯é€?/span><span style="white-space:nowrap;">˜q‡æÑa泵马达æ܇出液压æÑa到各个æÑa¾~¸æŽ¨åŠ¨ä¼ åŠ¨æœºæž„完成一¾pÕdˆ—动作åQŒå„个阶ŒDµéœ€è¦ä¸åŒçš„压力</span><span style="white-space:nowrap;">å’?/span></span> </p> <p> <span style="white-space:nowrap;"><span style="white-space:nowrap;">‹¹é‡ã€‚对于液压系¾lŸæ¥è¯ß_¼Œæ¯ä¸ªé˜¶æ®µå¯¹åŽ‹åŠ›ã€æµé‡çš„要求各不一æ øP¼Œè€ŒæÑa泵马辄¡š„功率æ˜?/span><span style="white-space:nowrap;">æ ÒŽ®å…¶è¿è¡Œè¿‡½E‹ä¸­æœ€å¤§è´Ÿè½½é…¾|®çš„åQŒè€ŒåŽ‹é“¸æœº</span></span> </p> <p> <span style="white-space:nowrap;"><span style="white-space:nowrap;">一个工作周期中只有高压锁模和押ž®„工作阶ŒD?/span><span style="white-space:nowrap;">负蝲较大åQŒå…¶ä»–工作阶ŒDµä¸€èˆ¬è¾ƒž®ï¼Œåœ¨å†·å´è¿‡½E‹çš„负蝲几乎为零。对于æÑa泵马达而言åQŒåŽ‹</span></span> </p> <p> <span style="white-space:nowrap;"><span style="white-space:nowrap;">é“?/span><span style="white-space:nowrap;">æœø™¿‡½E‹æ˜¯å‡ÞZºŽå˜åŒ–的负载状态,在定量æ܇的液压系¾lŸä¸­åQŒæÑa泵马达以恒定的è{速提供恒定的</span><span style="white-space:nowrap;">‹¹é‡åQŒè€Œå·¥ä½œæ‰€éœ€åŽ‹åŠ›å’Œæµé‡å¤§ž®æ˜¯é åŽ‹</span></span> </p> <p> <span style="white-space:nowrap;"><span style="white-space:nowrap;">力比例阀和流量比例阀来调节的åQŒé€šè¿‡è°ƒæ•´åŽ‹åŠ›æˆ?/span><span style="white-space:nowrap;">‹¹é‡æ¯”例阀的开度来控制压力或流量大ž®ã€‚多余的液压沚w€šè¿‡æº¢æµé˜€å›žæµåQŒæ­¤˜q‡ç¨‹¿U?/span></span> </p> <p> <span style="white-space:nowrap;"><span style="white-space:nowrap;">为高åŽ?/span><span style="white-space:nowrap;">截流åQŒç”±å®ƒé€ æˆçš„能量损å¤×ƒ¸€èˆ¬åœ¨50%左右ã€?/span><br /> <span style="white-space:nowrap;">2、压铸机节能攚w€ åŽŸç†æ¦‚˜q?/span><br /> <span style="white-space:nowrap;">由压铸机工作原理得知åQŒé«˜åŽ‹æˆª‹¹æ˜¯æ²ÒŽÜ‡é©¬è¾¾è€—能的浪费之处。我公司生äñ”的压铸机ä¸?/span><span style="white-space:nowrap;">用电‹¹çŸ¢é‡å˜é¢‘器利用˜q™ä¸€ç‰¹ç‚¹åQŒæ ¹æ®åŽ‹é“¸æœºç”?/span></span> </p> <p> <span style="white-space:nowrap;"><span style="white-space:nowrap;">产工艺的需求,采用变频器调节æÑa泵马辄¡š„</span><span style="white-space:nowrap;">转速,æ ÒŽ®åŽ‹é“¸æœºå·¥ä½œæ—¶æ‰€éœ€çš„压力或‹¹é‡å‚数及压铸机的动作反馈信号同步控制压铸机çš?/span></span> </p> <p> <span style="white-space:nowrap;"><span style="white-space:nowrap;">比例‹¹é‡é˜€ã€æ¯”例压力阀实现压力和流量的自动调节åQŒå…¶æ•ˆæžœç›¸å½“于将定量泉|”¹é€ æˆå˜é‡æ³µï¼Œ</span><span style="white-space:nowrap;">佉K€šè¿‡æº¢æµé˜€çš„回‹¹æµé‡é™åˆ°æœ€ä½Žï¼Œæ²ÒŽÜ‡</span></span> </p> <p> <span style="white-space:nowrap;"><span style="white-space:nowrap;">输出与整æœø™¿è¡Œæ‰€éœ€åŽ‹åŠ›å’Œæµé‡ç›¸åŒšw…åQŒè€Œä¸”无高</span><span style="white-space:nowrap;">压溢‹¹èƒ½é‡æŸå¤±ã€‚变频器通过反馈信号跟踪各个工作阶段的压力和‹¹é‡å˜åŒ–åQŒåƈ自动</span></span> </p> <p> <span style="white-space:nowrap;"><span style="white-space:nowrap;">调节æ²?/span><span style="white-space:nowrap;">æ³ëŠ”µæœºçš„转速。这æ øP¼Œæ²ÒŽÜ‡ç”‰|œºçš„电耗将跟随输出负蝲的变化而变化,从而可最大限度的èŠ?/span><span style="white-space:nowrap;">电,即经‹¹Žåˆå®žç”¨ã€‚很多工厂通过æ”?/span></span> </p> <p> <span style="white-space:nowrap;"><span style="white-space:nowrap;">造,已取得了显著的经‹¹Žæ•ˆç›Šã€?/span><br /> <span style="white-space:nowrap;">3、压铸机的电能消è€?/span><br /> <span style="white-space:nowrap;">压铸机的电能消耗主要表现在以下几个部分åQ?/span><br /> <span style="white-space:nowrap;">1åQ‰æ¶²åŽ‹ç³»¾lŸæÑaæ³ëŠš„电能消è€?/span><br /> <span style="white-space:nowrap;">2åQ‰åŠ çƒ­å™¨çš„电能消è€?/span><br /> <span style="white-space:nowrap;">3åQ‰åó@环冷却水æ³ëŠš„电能消è€?/span><br /> <span style="white-space:nowrap;">在压铸èžR间内åQŒä¸€èˆ¬å¤šå°åŽ‹é“¸æœºå…Þq”¨ä¸€å°å†·å´æ°´æ³µï¼Œå…¶ä¸­æ¶²åŽ‹æ²ÒŽÜ‡ç”‰|œºçš„用电量占整ä¸?/span><span style="white-space:nowrap;">压铸机用电量çš?0%以上åQŒæ‰€ä»¥é™ä½Žå…¶è€—电量是</span></span> </p> <p> <span style="white-space:nowrap;"><span style="white-space:nowrap;">压铸æœø™Š‚能的关键ã€?/span><br /> <span style="white-space:nowrap;">三、压铸工è‰ø™¯´æ˜?/span><br /> <span style="white-space:nowrap;">压铸机合模和脱模åQŒå¼€æ¨¡ç³»¾lŸæ‰€éœ€æ²¹åŽ‹è¾ƒä½ŽåQŒä¸”æ—‰™—´è¾ƒçŸ­åQ›è€Œæ³¨ž®„,保压åQŒå†·å´ç³»¾lŸæ‰€</span><span style="white-space:nowrap;">需油压较高åQŒä¸”æ—‰™—´è¾ƒé•¿åQŒä¸€èˆ¬äؓ一个工作周æœ?/span></span> </p> <p> <span style="white-space:nowrap;"><span style="white-space:nowrap;">çš?0%~60%。每个阶ŒD‰|—¶é—´çš„长短与加å·?/span><span style="white-space:nowrap;">å·¥äšg有关åQ›é—´æ­‡æœŸé•¿çŸ­ä¹Ÿä¸ŽåŠ å·¥å·¥äšg的情冉|œ‰å…»I¼Œæœ‰æ—¶å¯ä»¥ä¸è¦é—´æ­‡æœŸã€‚如果注ž®„的螺杆ç”?/span><br /> <span style="white-space:nowrap;">液æÑa马达驱动åQŒæ³¨ž®„时的系¾lŸæÑa压会高一些。压铸机加工工äšg的重量,从数十克到数万克ä¸?/span><span style="white-space:nowrap;">½{‰ã€‚因此,压铸机就有中ž®åž‹å’Œå¤§åž‹ä¹‹åˆ†ï¼Œ</span></span> </p> <p> <span style="white-space:nowrap;"><span style="white-space:nowrap;">加工数十克的ž®å·¥ä»¶å’ŒåŠ å·¥æ•°åƒå…‹çš„大工件一ä¸?/span><span style="white-space:nowrap;">周期的时间也是不相同的,ž®±æ˜¯å¯¹åŒä¸€å°åŽ‹é“¸æœºåQŒåŠ å·¥å·¥ä»¶çš„原料不同åQŒå„ŒDµå·¥è‰ºæµ½E?/span></span> </p> <p> <span style="white-space:nowrap;"><span style="white-space:nowrap;">中所</span><span style="white-space:nowrap;">需的压力和旉™—´ä¹Ÿæ˜¯éœ€è¦æ”¹å˜çš„ã€?/span><br /> <span style="white-space:nowrap;">四、节能效益预ä¼?/span><br /> <span style="white-space:nowrap;">1、评ä¼îC¾æ®ï¼š</span><br /> <span style="white-space:nowrap;">甉|œºä½¿ç”¨æ•ˆçŽ‡é¢„ä¼°70%åQŒç”µæœø™Š‚ç”늎‡é¢„ä¼°35%-45%åQŒæ”¹é€ æ€ÕdŠŸçŽ?2KW×5å?110KWåQ?/span><span style="white-space:nowrap;">电费单ä­h0.7å…?度,每天工作24ž®æ—¶åQŒæ¯æœˆå·¥</span></span> </p> <p> <span style="white-space:nowrap;"><span style="white-space:nowrap;">ä½?0天,每年工作12 个月åQŒå¼€æœºçŽ‡85%ã€?/span><br /> <span style="white-space:nowrap;">理想节电çŽ?{1-(30/50)3}*100%=(1-0.216)*100%=78.4%</span><br /> <span style="white-space:nowrap;">据我们估计保守节ç”늎‡åº”该åœ?5%左右ã€?/span><br /> <span style="white-space:nowrap;">2、效益评伎ͼš</span><br /> <span style="white-space:nowrap;">每天节约电量=甉|œºåŠŸçŽ‡Ã—甉|œºä½¿ç”¨æ•ˆçŽ‡Ã—节电率Ã?4 ž®æ—¶Ã—开机率</span><span style="white-space:nowrap;">=110KW×70%×40%×24H×85%=628.3åº?/span><br /> <span style="white-space:nowrap;">每月节约电费=628.3×30×0.7=13194.7å…?/span><br /> <span style="white-space:nowrap;">每年节约电费=13194.7×12=158336.4å…?/span><br /> <span style="white-space:nowrap;">3、投资æ€ÀLˆæœ¬ï¼š</span><br /> <span style="white-space:nowrap;">投资æ€ÀLˆæœ?甉|œºåŠŸçŽ‡Ã—1.2 倍×单ä»?110KW×1.2×1000 å…?KW=132000å…?/span><br /> <span style="white-space:nowrap;">4、投资回收期åQ?/span><br /> <span style="white-space:nowrap;">投资回收æœ?投资成本÷月节省电è´?132000元Ã?3194.7å…?10æœ?/span><br /> <span style="white-space:nowrap;">五、设备选型及日常维æŠ?/span><br /> <span style="white-space:nowrap;">选用普传PI9000¾pÕdˆ—高性能甉|µçŸ¢é‡å˜é¢‘器,æ ÒŽ®åŽ‹é“¸æœÞZ¸»æ²ÒŽÜ‡ç”‰|œºçš„功率匹配同åŠ?/span><span style="white-space:nowrap;">率的卛_¯ã€?/span><br /> <span style="white-space:nowrap;">变频器内部核心器件均采用˜q›å£å…ƒäšgåQŒä¿è¯å˜é¢‘器的质量及在正å¸æ€‹É用情况下的ä‹É用寿</span><span style="white-space:nowrap;">命ã€?/span><br /> <span style="white-space:nowrap;">1、变频器散热风扇及柜体的散热风扇òq›_‡å¯¿å‘½ä¸? òqß_¼Œè¯äh³¨æ„æ—¥å¸¸æ¸…‹zã€é˜²æ­¢ç§¯ž®˜å µ</span><span style="white-space:nowrap;">塞ã€?/span><br /> <span style="white-space:nowrap;">2、变频器滤æ‡L电解电容正常使用情况下寿命äؓ3â€? òqß_¼Œè¯äh³¨æ„åˆ°æœŸè”¾pÀL›´æ¢ã€?/span><br /> <span style="white-space:nowrap;">3、安装地点要ž®½é‡˜qœç¦»æ½®æ¹¿ã€ç²‰ž®˜ï¼Œä¸¥ç¦æœ‰é‡‘属粉ž®˜ã€?/span><br /> <span style="white-space:nowrap;">六、改造后效果</span><br /> <span style="white-space:nowrap;">高节ç”늎‡åQšæ”¹é€ åŽåQŒä‹É定量泵变ä¸ø™Š‚能型变量泵,压铸机液压系¾lŸä¸Žæ•´æœº˜qè¡Œæ‰€éœ€åŠŸçŽ‡</span><span style="white-space:nowrap;">基本匚w…åQŒæ— é«˜åŽ‹èŠ‚流、溢‹¹èƒ½é‡æŸå¤±ï¼ŒèŠ‚电</span></span> </p> <p> <span style="white-space:nowrap;"><span style="white-space:nowrap;">率可è¾?0%ï½?0%ã€?/span><br /> <span style="white-space:nowrap;">高效率:攚w€ å‰åŠŸçŽ‡å› æ•°ä¸€èˆ¬äؓ0.5ï½?.8åQŒæ”¹é€ åŽå¯è¾¾0.96 以上åQŒæ•…能显着提高ç”늽‘åŠ?/span><br /> <span style="white-space:nowrap;">率因敎ͼŒé™ä½Žæ— åŠŸç”‰|µåQŒä»Žè€Œé™ä½Žçº¿è·¯æŸè€—。对供电讑֤‡è€Œè¨€åQŒåˆ™èµ·åˆ°äº†å¢žå®¹çš„作用ã€?/span><br /> <span style="white-space:nowrap;">高可靠性:保留压铸机原有控制方式及油èµ\不变做备用,出现故障及时报警åQŒå…·æœ‰è¿‡åŽ‹ã€?/span><span style="white-space:nowrap;">˜q‡æµã€è¿‡è½½ã€è¿‡çƒ­ã€æ¬ åŽ‹åŠå¯¹åœ°çŸ­èµ\½{‰å¤š¿U?/span></span> </p> <p> <span style="white-space:nowrap;"><span style="white-space:nowrap;">保护åQŒè¿˜å¯æœ‰æ•ˆåœ°ä¿æŠ¤æ²ÒŽÜ‡ç”‰|œºã€‚采用市ç”?èŠ?/span><span style="white-space:nowrap;">能运行控制方式,一旦故障时不媄响生产ã€?/span><br /> <span style="white-space:nowrap;">廉™•¿æœºæ¢°å¯¿å‘½ã€æ”¹å–„环境:软è“v动减è½Õd¼€æœºé”æ¨¡éœ‡åŠ¨ï¼Œå»‰™•¿è®‘Ö¤‡å’Œæ¨¡å…ïLš„使用寿命、减</span><span style="white-space:nowrap;">è½Õd™ªéŸŸë€‚改善工作环境,¾pȝ»Ÿå‘热明显减少åQ?/span></span> </p> <p> <span style="white-space:nowrap;"><span style="white-space:nowrap;">æ²ÒŽ¸©½E›_®šåQŒå†·å´ç”¨æ°´é‡å¯èŠ‚çœ?0%以上。åšg</span><span style="white-space:nowrap;">长密ž®ç»„件的使用寿命åQŒé™ä½Žåœæœºç»´ä¿®æœºä¼šï¼ŒèŠ‚省大量¾l´æŠ¤è´¹ç”¨ã€?/span><br /> <span style="white-space:nowrap;">七、结è®?/span><br /> <span style="white-space:nowrap;">节电ž®±æ˜¯åˆ›é€ æ•ˆç›Šï¼Œæ•´ä¸ªç”¨ç”µ¾pȝ»ŸèŠ‚电攚w€ åŽè¾‘Öˆ°ä¸€‹Æ¡æŠ•èµ„,长期受益。这™å¹èŠ‚甉|”¹é€?/span><span style="white-space:nowrap;">在减ž®‘电费的同时åQŒä¹Ÿä¸ºåŽ‹é“¸æœºæä¾›ä¼˜è‰¯çš„安</span></span> </p> <p> <span style="white-space:nowrap;"><span style="white-space:nowrap;">全保护作用,ž®†æœ‰åˆ©äºŽä¿æŠ¤ç”‰|œºã€ç”µå­å…ƒä»¶ã€?/span><span style="white-space:nowrap;">开兛_…ƒä»¶ç­‰è®‘Ö¤‡çš„ä‹É用寿命,˜q˜å¯èµ·åˆ°ç”‰|œºè½¯å¯åŠ¨çš„作用åQŒå‡ž®‘设备投资成本、维护成</span></span> </p> <p> <span style="white-space:nowrap;"><span style="white-space:nowrap;">本,</span><span style="white-space:nowrap;">提高企业生äñ”效率åQŒå¢žåˆ›ä¼ä¸šæ•ˆç›Šã€‚提升企业äñ”品市场竞争力ã€?/span><br /> </span> </p></P> <P></P> <h2><a 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