季度的(de)维(wei)护工(gong)作(zuo)(zuo)元件维(wei)护内(nei)容自(zi)(zi)动(dong)(dong)排水(shui)(shui)器(qi)能(neng)(neng)(neng)否(fou)(fou)(fou)自(zi)(zi)动(dong)(dong)排水(shui)(shui)、手动(dong)(dong)操作(zuo)(zuo)装置能(neng)(neng)(neng)否(fou)(fou)(fou)正常动(dong)(dong)作(zuo)(zuo)过滤器(qi)过滤器(qi)两侧压(ya)(ya)(ya)差是(shi)否(fou)(fou)(fou)超过允许(xu)压(ya)(ya)(ya)降减(jian)压(ya)(ya)(ya)阀(fa)(fa)旋转手柄，压(ya)(ya)(ya)力(li)可否(fou)(fou)(fou)调(diao)节(jie)。系统压(ya)(ya)(ya)力(li)为零时，压(ya)(ya)(ya)力(li)表(biao)指针能(neng)(neng)(neng)否(fou)(fou)(fou)回零压(ya)(ya)(ya)力(li)表(biao)观(guan)测(ce)压(ya)(ya)(ya)力(li)表(biao)指示值是(shi)否(fou)(fou)(fou)正常安(an)全阀(fa)(fa)使(shi)压(ya)(ya)(ya)力(li)高于设(she)定(ding)压(ya)(ya)(ya)力(li)，观(guan)察安(an)全阀(fa)(fa)能(neng)(neng)(neng)否(fou)(fou)(fou)溢流压(ya)(ya)(ya)力(li)开(kai)关(guan)在*高和*低设(she)定(ding)压(ya)(ya)(ya)力(li)，观(guan)测(ce)压(ya)(ya)(ya)力(li)开(kai)关(guan)能(neng)(neng)(neng)否(fou)(fou)(fou)正常动(dong)(dong)作(zuo)(zuo)换向阀(fa)(fa)的(de)排气(qi)口查油(you)雾的(de)喷出量，有(you)无(wu)冷(leng)凝水(shui)(shui)排出，有(you)无(wu)漏(lou)气(qi)电(dian)磁(ci)阀(fa)(fa)线圈温升(sheng)、切换动(dong)(dong)作(zuo)(zuo)是(shi)否(fou)(fou)(fou)正常速(su)度控制阀(fa)(fa)调(diao)节(jie)节(jie)流阀(fa)(fa)开(kai)度，能(neng)(neng)(neng)否(fou)(fou)(fou)对气(qi)缸速(su)度进行有(you)效调(diao)节(jie)气(qi)缸动(dong)(dong)作(zuo)(zuo)是(shi)否(fou)(fou)(fou)平稳，速(su)度及循(xun)环周期有(you)无(wu)明显变化，气(qi)缸安(an)装架是(shi)否(fou)(fou)(fou)松动(dong)(dong)和异常变形，活(huo)塞(sai)杆连接有(you)无(wu)松动(dong)(dong)、漏(lou)气(qi)，活(huo)塞(sai)杆表(biao)面有(you)无(wu)锈蚀、划伤、偏磨空(kong)压(ya)(ya)(ya)机入口过滤网是(shi)否(fou)(fou)(fou)堵塞(sai)浙江欧雷凯(kai)气(qi)动(dong)(dong)有(you)限公(gong)司致力(li)于提供(gong)阀(fa)(fa)门产(chan)品，欢(huan)迎您的(de)来(lai)电(dian)！天(tian)津电(dian)磁(ci)阀(fa)(fa)气(qi)动(dong)(dong)阀(fa)(fa)门供(gong)应商

气(qi)(qi)(qi)(qi)(qi)(qi)动(dong)(dong)(dong)(dong)(dong)阀(fa)(fa)(fa)门(men)(men)(men)(men)(men)是指通(tong)过(guo)压(ya)缩空(kong)气(qi)(qi)(qi)(qi)(qi)(qi)的(de)(de)(de)(de)(de)作用(yong)驱动(dong)(dong)(dong)(dong)(dong)活塞、膜(mo)片(pian)等部(bu)件(jian)运(yun)动(dong)(dong)(dong)(dong)(dong)来(lai)实(shi)(shi)(shi)现(xian)流体(ti)(ti)控(kong)制(zhi)的(de)(de)(de)(de)(de)一(yi)种阀(fa)(fa)(fa)门(men)(men)(men)(men)(men)。在工业(ye)自动(dong)(dong)(dong)(dong)(dong)化(hua)领域(yu)(yu)中(zhong)，气(qi)(qi)(qi)(qi)(qi)(qi)动(dong)(dong)(dong)(dong)(dong)阀(fa)(fa)(fa)门(men)(men)(men)(men)(men)具(ju)有很(hen)多(duo)(duo)的(de)(de)(de)(de)(de)应用(yong)场(chang)景(jing)(jing)和(he)(he)发(fa)展前景(jing)(jing)。气(qi)(qi)(qi)(qi)(qi)(qi)动(dong)(dong)(dong)(dong)(dong)阀(fa)(fa)(fa)门(men)(men)(men)(men)(men)的(de)(de)(de)(de)(de)工作原理是利(li)用(yong)压(ya)缩空(kong)气(qi)(qi)(qi)(qi)(qi)(qi)或其他气(qi)(qi)(qi)(qi)(qi)(qi)体(ti)(ti)推动(dong)(dong)(dong)(dong)(dong)阀(fa)(fa)(fa)门(men)(men)(men)(men)(men)进行(xing)(xing)开闭。通(tong)常(chang)(chang)情况，气(qi)(qi)(qi)(qi)(qi)(qi)动(dong)(dong)(dong)(dong)(dong)阀(fa)(fa)(fa)门(men)(men)(men)(men)(men)由气(qi)(qi)(qi)(qi)(qi)(qi)控(kong)元(yuan)件(jian)、执行(xing)(xing)机(ji)构(gou)(gou)和(he)(he)传(chuan)感器组成(cheng)。气(qi)(qi)(qi)(qi)(qi)(qi)控(kong)元(yuan)件(jian)将(jiang)压(ya)缩空(kong)气(qi)(qi)(qi)(qi)(qi)(qi)转(zhuan)换成(cheng)气(qi)(qi)(qi)(qi)(qi)(qi)动(dong)(dong)(dong)(dong)(dong)能量，并将(jiang)其导入(ru)执行(xing)(xing)机(ji)构(gou)(gou)。执行(xing)(xing)机(ji)构(gou)(gou)通(tong)常(chang)(chang)由阀(fa)(fa)(fa)体(ti)(ti)、活塞、膜(mo)片(pian)等部(bu)件(jian)组成(cheng)，通(tong)过(guo)这些(xie)部(bu)件(jian)的(de)(de)(de)(de)(de)运(yun)动(dong)(dong)(dong)(dong)(dong)来(lai)控(kong)制(zhi)流体(ti)(ti)的(de)(de)(de)(de)(de)开闭和(he)(he)流量大小。传(chuan)感器则(ze)可以(yi)(yi)(yi)(yi)实(shi)(shi)(shi)时监(jian)测气(qi)(qi)(qi)(qi)(qi)(qi)动(dong)(dong)(dong)(dong)(dong)阀(fa)(fa)(fa)门(men)(men)(men)(men)(men)的(de)(de)(de)(de)(de)状态，并将(jiang)其反馈给相关的(de)(de)(de)(de)(de)系统控(kong)制(zhi)设备(bei)。气(qi)(qi)(qi)(qi)(qi)(qi)动(dong)(dong)(dong)(dong)(dong)阀(fa)(fa)(fa)门(men)(men)(men)(men)(men)的(de)(de)(de)(de)(de)应用(yong)场(chang)景(jing)(jing)十(shi)分多(duo)(duo)，特别是在一(yi)些(xie)对控(kong)制(zhi)精度要求(qiu)较高的(de)(de)(de)(de)(de)行(xing)(xing)业(ye)中(zhong)，如石(shi)油化(hua)工、食品(pin)饮(yin)料生(sheng)产等。气(qi)(qi)(qi)(qi)(qi)(qi)动(dong)(dong)(dong)(dong)(dong)阀(fa)(fa)(fa)门(men)(men)(men)(men)(men)可以(yi)(yi)(yi)(yi)用(yong)于流体(ti)(ti)的(de)(de)(de)(de)(de)切(qie)断(duan)、调节和(he)(he)反向流控(kong)制(zhi)等多(duo)(duo)种控(kong)制(zhi)方式，因此在这些(xie)行(xing)(xing)业(ye)的(de)(de)(de)(de)(de)自动(dong)(dong)(dong)(dong)(dong)化(hua)生(sheng)产线上应用(yong)非常(chang)(chang)多(duo)(duo)。同时，气(qi)(qi)(qi)(qi)(qi)(qi)动(dong)(dong)(dong)(dong)(dong)阀(fa)(fa)(fa)门(men)(men)(men)(men)(men)还具(ju)有可靠性高、使用(yong)寿命(ming)长等优点，可以(yi)(yi)(yi)(yi)大幅度提高生(sheng)产效率和(he)(he)减少人(ren)力成(cheng)本。未(wei)来(lai)，随(sui)着自动(dong)(dong)(dong)(dong)(dong)化(hua)智(zhi)能化(hua)技术(shu)的(de)(de)(de)(de)(de)不断(duan)发(fa)展，气(qi)(qi)(qi)(qi)(qi)(qi)动(dong)(dong)(dong)(dong)(dong)阀(fa)(fa)(fa)门(men)(men)(men)(men)(men)也将(jiang)面临更多(duo)(duo)的(de)(de)(de)(de)(de)应用(yong)机(ji)遇(yu)和(he)(he)挑(tiao)战(zhan)。近年来(lai)，越来(lai)越多(duo)(duo)的(de)(de)(de)(de)(de)气(qi)(qi)(qi)(qi)(qi)(qi)动(dong)(dong)(dong)(dong)(dong)阀(fa)(fa)(fa)门(men)(men)(men)(men)(men)开始(shi)实(shi)(shi)(shi)现(xian)数字化(hua)、网络化(hua)和(he)(he)智(zhi)能化(hua)，将(jiang)会更好地(di)满足不同行(xing)(xing)业(ye)的(de)(de)(de)(de)(de)自动(dong)(dong)(dong)(dong)(dong)化(hua)控(kong)制(zhi)需求(qiu)。总之，气(qi)(qi)(qi)(qi)(qi)(qi)动(dong)(dong)(dong)(dong)(dong)阀(fa)(fa)(fa)门(men)(men)(men)(men)(men)在未(wei)来(lai)的(de)(de)(de)(de)(de)工业(ye)自动(dong)(dong)(dong)(dong)(dong)化(hua)领域(yu)(yu)中(zhong)将(jiang)持(chi)续发(fa)挥(hui)重要作用(yong)，其发(fa)展前景(jing)(jing)值(zhi)得看好。宁(ning)夏(xia)脚踏阀(fa)(fa)(fa)气(qi)(qi)(qi)(qi)(qi)(qi)动(dong)(dong)(dong)(dong)(dong)阀(fa)(fa)(fa)门(men)(men)(men)(men)(men)规格(ge)浙(zhe)江欧雷凯气(qi)(qi)(qi)(qi)(qi)(qi)动(dong)(dong)(dong)(dong)(dong)有限公司(si)致力于为(wei)各个行(xing)(xing)业(ye)和(he)(he)市场(chang)提供高性价比的(de)(de)(de)(de)(de)气(qi)(qi)(qi)(qi)(qi)(qi)动(dong)(dong)(dong)(dong)(dong)产品(pin)，以(yi)(yi)(yi)(yi)提升客户的(de)(de)(de)(de)(de)效益(yi)与(yu)竞争力。

初期故(gu)障在调试阶段和(he)开(kai)始(shi)运转的(de)(de)(de)二、三个月内(nei)发(fa)生的(de)(de)(de)故(gu)障称为(wei)初期故(gu)障，其(qi)产生的(de)(de)(de)原因有:1)元(yuan)件(jian)加(jia)工、装(zhuang)配(pei)(pei)不(bu)(bu)(bu)良:如(ru)元(yuan)件(jian)内(nei)孔的(de)(de)(de)研磨不(bu)(bu)(bu)符合要(yao)(yao)求，零件(jian)毛(mao)刺(ci)未去除干净，不(bu)(bu)(bu)清洁安(an)装(zhuang)，零件(jian)装(zhuang)错、装(zhuang)反，装(zhuang)配(pei)(pei)时(shi)(shi)对(dui)中不(bu)(bu)(bu)良，紧(jin)固钉拧紧(jin)力矩(ju)不(bu)(bu)(bu)恰当(dang)，零件(jian)材质不(bu)(bu)(bu)符合要(yao)(yao)求，外(wai)购零件(jian)(如(ru)密(mi)封图、弹管)质量差等。2)设计(ji)(ji)(ji)失误:设计(ji)(ji)(ji)元(yuan)件(jian)时(shi)(shi)，对(dui)零件(jian)的(de)(de)(de)材料选用不(bu)(bu)(bu)当(dang)，加(jia)工工艺要(yao)(yao)求不(bu)(bu)(bu)合理(li)等。对(dui)元(yuan)件(jian)的(de)(de)(de)特点、性能和(he)功能了解不(bu)(bu)(bu)够，造(zao)(zao)成回(hui)(hui)路设计(ji)(ji)(ji)时(shi)(shi)元(yuan)件(jian)选用不(bu)(bu)(bu)当(dang)·设计(ji)(ji)(ji)的(de)(de)(de)空(kong)气处理(li)系统(tong)不(bu)(bu)(bu)能满足气动元(yuan)件(jian)和(he)系统(tong)的(de)(de)(de)要(yao)(yao)求，回(hui)(hui)路设计(ji)(ji)(ji)出(chu)现错误。3)安(an)装(zhuang)不(bu)(bu)(bu)符合要(yao)(yao)求:安(an)装(zhuang)时(shi)(shi)，元(yuan)件(jian)及(ji)管道内(nei)吹洗(xi)不(bu)(bu)(bu)干净，使灰(hui)尘、密(mi)封材料碎(sui)片等杂质混入，造(zao)(zao)成气动系统(tong)故(gu)障，安(an)装(zhuang)气缸时(shi)(shi)存在偏载。管道的(de)(de)(de)防松、防振动没

气体(ti)(ti)(ti)状(zhuang)(zhuang)态(tai)(tai)术语(yu)定义(yi)［标(biao)准状(zhuang)(zhuang)态(tai)(tai)］指温(wen)度为20℃、相对(dui)湿度为65%、压(ya)力(li)为0.1Mpa时的(de)(de)(de)(de)(de)(de)(de)空气的(de)(de)(de)(de)(de)(de)(de)状(zhuang)(zhuang)态(tai)(tai)。在标(biao)准状(zhuang)(zhuang)态(tai)(tai),空气的(de)(de)(de)(de)(de)(de)(de)密(mi)(mi)度ρ=1.185kg/m³。按(an)国际标(biao)准ISO8778，标(biao)准状(zhuang)(zhuang)态(tai)(tai)的(de)(de)(de)(de)(de)(de)(de)单位后面可标(biao)注“（ANR）”。［基(ji)(ji)准状(zhuang)(zhuang)态(tai)(tai)］指温(wen)度为0℃、压(ya)力(li)为101.3Kpa的(de)(de)(de)(de)(de)(de)(de)干空气的(de)(de)(de)(de)(de)(de)(de)状(zhuang)(zhuang)态(tai)(tai)。在基(ji)(ji)准状(zhuang)(zhuang)态(tai)(tai)，空气的(de)(de)(de)(de)(de)(de)(de)密(mi)(mi)度ρ=1.293kg/m³。［理想(xiang)(xiang)气体(ti)(ti)(ti)］没有(you)粘性的(de)(de)(de)(de)(de)(de)(de)气体(ti)(ti)(ti)称为理想(xiang)(xiang)气体(ti)(ti)(ti)（idealgas）。目的(de)(de)(de)(de)(de)(de)(de)是简化解题(ti)。［完(wan)(wan)(wan)全(quan)气体(ti)(ti)(ti)］是一种假想(xiang)(xiang)的(de)(de)(de)(de)(de)(de)(de)气体(ti)(ti)(ti)，它(ta)的(de)(de)(de)(de)(de)(de)(de)分子是一些弹性的(de)(de)(de)(de)(de)(de)(de)、不(bu)占有(you)体(ti)(ti)(ti)积的(de)(de)(de)(de)(de)(de)(de)质点，分子间(jian)除相互碰撞外，没有(you)相互作(zuo)用力(li)。它(ta)与没有(you)粘性的(de)(de)(de)(de)(de)(de)(de)理想(xiang)(xiang)气体(ti)(ti)(ti)是完(wan)(wan)(wan)全(quan)不(bu)同的(de)(de)(de)(de)(de)(de)(de)两(liang)个(ge)概(gai)念。实际气体(ti)(ti)(ti)只要不(bu)处于(yu)很高的(de)(de)(de)(de)(de)(de)(de)压(ya)力(li)或(huo)很低的(de)(de)(de)(de)(de)(de)(de)温(wen)度，都可当作(zuo)完(wan)(wan)(wan)全(quan)气体(ti)(ti)(ti)。按(an)完(wan)(wan)(wan)全(quan)气体(ti)(ti)(ti)状(zhuang)(zhuang)态(tai)(tai)方程计(ji)算(suan)，带来的(de)(de)(de)(de)(de)(de)(de)误差不(bu)会(hui)太大。面对(dui)激烈的(de)(de)(de)(de)(de)(de)(de)市场(chang)竞争，浙江欧雷凯气动有(you)限公司通(tong)过产(chan)品升级和价(jia)格调整等措施，争取更多客(ke)户(hu)的(de)(de)(de)(de)(de)(de)(de)青睐。

空(kong)气(qi)过(guo)(guo)滤(lv)器(qi)原理(li)(li)：压(ya)缩(suo)空(kong)气(qi)经过(guo)(guo)导流片产(chan)(chan)生强烈旋(xuan)转，离(li)心力使杂质(zhi)和水(shui)分(fen)分(fen)离(li)出(chu)来(lai)，通过(guo)(guo)排(pai)水(shui)口流出(chu)。定期(qi)维护：1。更(geng)换(huan)滤(lv)芯(xin)进出(chu)口压(ya)差为(wei)0.1MPa时需要更(geng)换(huan)2。清洗(xi)水(shui)杯(bei)(bei)用(yong)(yong)中性(xing)洗(xi)涤剂清洗(xi)水(shui)杯(bei)(bei)，检(jian)查(cha)水(shui)杯(bei)(bei)是否(fou)有裂纹。3。排(pai)水(shui)机构(gou)检(jian)查(cha)调(diao)(diao)压(ya)阀(fa)(fa)(fa)调(diao)(diao)压(ya)阀(fa)(fa)(fa)的(de)(de)(de)作用(yong)(yong)：减压(ya)稳压(ya)定期(qi)维护：1。阀(fa)(fa)(fa)芯(xin)部位点检(jian)、阀(fa)(fa)(fa)芯(xin)滑动面(mian)注油(you)(you)(you)(you)。2。主阀(fa)(fa)(fa)导杆处注油(you)(you)(you)(you)。3。溢流能(neng)力的(de)(de)(de)检(jian)验。油(you)(you)(you)(you)雾器(qi)在P1和P2压(ya)差的(de)(de)(de)作用(yong)(yong)，油(you)(you)(you)(you)滴(di)从滴(di)油(you)(you)(you)(you)窗中滴(di)带(dai)单向(xiang)阀(fa)(fa)(fa)的(de)(de)(de)吸(xi)油(you)(you)(you)(you)管可(ke)防止油(you)(you)(you)(you)液的(de)(de)(de)回流透明(ming)的(de)(de)(de)油(you)(you)(you)(you)杯(bei)(bei)可(ke)以观察油(you)(you)(you)(you)面(mian)高度(du)秉(bing)承“质(zhi)量至上、服务(wu)至上”的(de)(de)(de)理(li)(li)念，浙江欧雷凯气(qi)动有限公司致力于为(wei)客户提供质(zhi)量、高性(xing)价比的(de)(de)(de)气(qi)动产(chan)(chan)品。青(qing)海电磁阀(fa)(fa)(fa)气(qi)动阀(fa)(fa)(fa)门哪种好

浙江欧雷凯气动有限(xian)公司坚持气动产品(pin)的专(zhuan)业化制造，以高性(xing)价比的气动产品(pin)出现(xian)在世界舞台。天津电磁阀(fa)气动阀(fa)门供(gong)应商

气(qi)(qi)(qi)缸(gang)(gang)的(de)(de)基本结构(gou)1缓(huan)(huan)冲(chong)(chong)密(mi)封圈2磁环(huan)3缓(huan)(huan)冲(chong)(chong)套(tao)4缸(gang)(gang)筒5导(dao)向(xiang)套(tao)6防(fang)尘圈7前(qian)端盖8前(qian)气(qi)(qi)(qi)口9磁性(xing)开关10活塞(sai)杆11耐磨环(huan)12活塞(sai)密(mi)封圈13后端盖14缓(huan)(huan)冲(chong)(chong)调(diao)节(jie)(jie)螺(luo)(luo)栓缸(gang)(gang)筒通(tong)常由无缝(feng)钢管制成，工作面加工成高(gao)的(de)(de)光洁度(du)并镀有硬铬，使摩(mo)擦和(he)磨损减低(di)到最小值·端盖由铝合金或(huo)可锻铸铁制成并用(yong)(yong)拉杆夹(jia)紧缸(gang)(gang)筒，小型气(qi)(qi)(qi)缸(gang)(gang)是用(yong)(yong)螺(luo)(luo)纹或(huo)碾边固(gu)定缸(gang)(gang)筒·铝合金、黄(huang)铜、青或(huo)不(bu)锈(xiu)钢制成的(de)(de)筒可用(yong)(yong)于腐蚀性(xing)和(he)不(bu)安全的(de)(de)环(huan)境(jing)中。不(bu)同(tong)型式的(de)(de)密(mi)封保证了气(qi)(qi)(qi)缸(gang)(gang)的(de)(de)密(mi)封性(xing)。缓(huan)(huan)冲(chong)(chong)气(qi)(qi)(qi)缸(gang)(gang)能有很(hen)高(gao)的(de)(de)速度(du)，因此(ci)在(zai)行程的(de)(de)终端会产生很(hen)大的(de)(de)冲(chong)(chong)击(ji)(ji)力·所以(yi)小气(qi)(qi)(qi)缸(gang)(gang)也常常安装缓(huan)(huan)冲(chong)(chong)，即用(yong)(yong)橡胶(jiao)减震垫来吸(xi)收冲(chong)(chong)击(ji)(ji)和(he)预防(fang)气(qi)(qi)(qi)缸(gang)(gang)内部故障·对于大气(qi)(qi)(qi)缸(gang)(gang)，冲(chong)(chong)击(ji)(ji)可用(yong)(yong)气(qi)(qi)(qi)缓(huan)(huan)冲(chong)(chong)来减震，使活塞(sai)到达行程未端区(qu)域时(shi)减速·这种缓(huan)(huan)冲(chong)(chong)的(de)(de)吸(xi)收是靠气(qi)(qi)(qi)缸(gang)(gang)达至行程末(mo)端时(shi)空(kong)(kong)气(qi)(qi)(qi)由泄放通(tong)道排(pai)出实现(xian)，通(tong)过可调(diao)节(jie)(jie)流阀可改变(bian)活塞(sai)的(de)(de)运动(dong)(dong)速度(du)。当(dang)缓(huan)(huan)冲(chong)(chong)活塞(sai)出入缓(huan)(huan)冲(chong)(chong)密(mi)封体时(shi)，从(cong)排(pai)气(qi)(qi)(qi)口正(zheng)常排(pai)人大气(qi)(qi)(qi)的(de)(de)空(kong)(kong)气(qi)(qi)(qi)被(bei)(bei)封闭，空(kong)(kong)气(qi)(qi)(qi)只(zhi)能通(tong)过可调(diao)节(jie)(jie)流口排(pai)出，这样空(kong)(kong)气(qi)(qi)(qi)就(jiu)被(bei)(bei)压缩成相当(dang)高(gao)的(de)(de)压力从(cong)而制动(dong)(dong)活塞(sai)的(de)(de)惯性(xing)·当(dang)活塞(sai)反向(xiang)时(shi)，缓(huan)(huan)冲(chong)(chong)密(mi)封件的(de)(de)作用(yong)(yong)如同(tong)一个单向(xiang)阀，允许空(kong)(kong)气(qi)(qi)(qi)自由流向(xiang)活塞(sai)·这种缓(huan)(huan)冲(chong)(chong)形式由于会限制空(kong)(kong)气(qi)(qi)(qi)的(de)(de)流量(liang)和(he)抑(yi)制活塞(sai)的(de)(de)加速，所以(yi)缓(huan)(huan)冲(chong)(chong)冲(chong)(chong)程越短越好(hao)。天津电磁阀气(qi)(qi)(qi)动(dong)(dong)阀门供(gong)应商

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