如何抑制“嘯(xiao)叫(jiao)”現(xian)象：1.降壓電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)通常(chang)有(you)PWM和(he)PFM工作模(mo)(mo)式(shi)。PWM模(mo)(mo)式(shi)下(xia)紋波(bo)小，在(zai)高負載功耗(hao)(hao)條件(jian)下(xia)使用。為了避(bi)免(mian)BUCK在(zai)PWM模(mo)(mo)式(shi)下(xia)充(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)的(de)(de)開(kai)(kai)關(guan)(guan)頻率(lv)(lv)引起(qi)的(de)(de)嘯(xiao)叫(jiao)，有(you)些電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)的(de)(de)開(kai)(kai)關(guan)(guan)頻率(lv)(lv)會刻意避(bi)開(kai)(kai)20hz~20Khz的(de)(de)開(kai)(kai)關(guan)(guan)頻率(lv)(lv)。2.當(dang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)處于輕載模(mo)(mo)式(shi)時，會間(jian)歇工作，間(jian)歇輸出幾個(ge)脈(mo)沖(chong)。這種(zhong)間(jian)歇脈(mo)沖(chong)的(de)(de)頻率(lv)(lv)也可(ke)(ke)以(yi)(yi)被人耳聽到。因此，從電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)或負載的(de)(de)角(jiao)度來看，PFM工作時間(jian)歇脈(mo)沖(chong)的(de)(de)工作頻率(lv)(lv)應進行優化(hua)，以(yi)(yi)避(bi)免(mian)嘯(xiao)叫(jiao)。3.另(ling)一種(zhong)是隱藏狀(zhuang)態。在(zai)項目初期，系統(tong)往往不(bu)穩(wen)定，負載在(zai)正常(chang)和(he)低功耗(hao)(hao)模(mo)(mo)式(shi)之間(jian)反(fan)復切換(huan)，電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)也很容(rong)易在(zai)PWM和(he)PFM模(mo)(mo)式(shi)之間(jian)切換(huan)。這種(zhong)切換(huan)的(de)(de)時隙也可(ke)(ke)能引起(qi)嘯(xiao)叫(jiao)，需要軟件(jian)優化(hua)系統(tong)的(de)(de)穩(wen)定性(xing)，避(bi)免(mian)負載工作模(mo)(mo)式(shi)的(de)(de)異常(chang)切換(huan)，避(bi)免(mian)嘯(xiao)叫(jiao)。大容(rong)量(liang)低耐(nai)壓鉭電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)的(de)(de)替代產品：高分(fen)子聚合物固體鋁電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)解電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)器。徐州貼片鋁電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)解電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)哪家便(bian)宜

陶瓷介質(zhi)電(dian)(dian)(dian)(dian)容(rong)器的(de)絕(jue)緣(yuan)體材料主要(yao)采用(yong)陶瓷，其基(ji)本結構是陶瓷與內電(dian)(dian)(dian)(dian)極相互(hu)重(zhong)疊。有幾(ji)種陶瓷。由于電(dian)(dian)(dian)(dian)子產(chan)品無(wu)害，尤(you)其是無(wu)鉛，介電(dian)(dian)(dian)(dian)系數高的(de)PB(鉛)退出了陶瓷電(dian)(dian)(dian)(dian)容(rong)器領域，現在(zai)(zai)主要(yao)使用(yong)TiO2(二氧化鈦)、BaTiO3、CaZrO3(鋯酸鈣(gai))等(deng)(deng)。與其他電(dian)(dian)(dian)(dian)容(rong)器相比，它具有體積小、容(rong)量大、耐熱性好(hao)、適合(he)批(pi)量生產(chan)、價格低(di)廉(lian)等(deng)(deng)優點。由于原(yuan)材料豐富、結構簡單(dan)、價格低(di)廉(lian)、電(dian)(dian)(dian)(dian)容(rong)范(fan)圍寬(通常為幾(ji)PF到幾(ji)百F)、損耗小，電(dian)(dian)(dian)(dian)容(rong)的(de)溫度系數可以根據(ju)需要(yao)在(zai)(zai)很寬的(de)范(fan)圍內調節。鎮江電(dian)(dian)(dian)(dian)源(yuan)濾波(bo)電(dian)(dian)(dian)(dian)容(rong)批(pi)發鉭電(dian)(dian)(dian)(dian)容(rong)在(zai)(zai)電(dian)(dian)(dian)(dian)源(yuan)濾波(bo)、交流旁路等(deng)(deng)用(yong)途(tu)上少(shao)有競(jing)爭對手。

電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)器(qi)是一種(zhong)(zhong)被大(da)量使用(yong)(yong)在電(dian)(dian)(dian)(dian)(dian)(dian)(dian)子設備中(zhong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)子元件，普遍應用(yong)(yong)于(yu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)中(zhong)的(de)(de)(de)(de)(de)隔直(zhi)通(tong)交(jiao)(jiao)，耦合(he)，旁路(lu)(lu)，濾波，調諧回(hui)路(lu)(lu)，能(neng)量轉(zhuan)換，控制等(deng)方面(mian)。關(guan)于(yu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)器(qi)的(de)(de)(de)(de)(de)作(zuo)(zuo)用(yong)(yong)，大(da)家(jia)(jia)是否(fou)清楚呢？下面(mian)小(xiao)編將(jiang)為(wei)大(da)家(jia)(jia)介紹電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)器(qi)的(de)(de)(de)(de)(de)作(zuo)(zuo)用(yong)(yong)、電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)器(qi)的(de)(de)(de)(de)(de)生產廠家(jia)(jia)及(ji)價(jia)格等(deng)內容(rong)。電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)的(de)(de)(de)(de)(de)基本(ben)(ben)工作(zuo)(zuo)原(yuan)理就(jiu)是充電(dian)(dian)(dian)(dian)(dian)(dian)(dian)放(fang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian),當然還有整流(liu)(liu)、振蕩以(yi)及(ji)其它的(de)(de)(de)(de)(de)作(zuo)(zuo)用(yong)(yong).另外電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)的(de)(de)(de)(de)(de)結(jie)構非(fei)常簡(jian)單,主要(yao)(yao)由(you)(you)兩塊正負電(dian)(dian)(dian)(dian)(dian)(dian)(dian)極和(he)夾在中(zhong)間的(de)(de)(de)(de)(de)絕(jue)緣(yuan)介質組成,所以(yi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)類型主要(yao)(yao)是由(you)(you)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)極和(he)絕(jue)緣(yuan)介質決定(ding)的(de)(de)(de)(de)(de)。電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)的(de)(de)(de)(de)(de)用(yong)(yong)途非(fei)常多,主要(yao)(yao)有如下幾種(zhong)(zhong)：1．隔直(zhi)流(liu)(liu)：阻止直(zhi)流(liu)(liu)通(tong)過而(er)讓(rang)交(jiao)(jiao)流(liu)(liu)通(tong)過。2．旁路(lu)(lu)（去(qu)耦）：為(wei)交(jiao)(jiao)流(liu)(liu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)中(zhong)某(mou)些(xie)并聯(lian)的(de)(de)(de)(de)(de)元件提供低阻抗通(tong)路(lu)(lu)。3．耦合(he)：作(zuo)(zuo)為(wei)兩個(ge)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)之間的(de)(de)(de)(de)(de)連接,允許交(jiao)(jiao)流(liu)(liu)信號(hao)通(tong)過并傳輸到下一級電(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)。4．濾波：這(zhe)個(ge)對DIY而(er)言很重要(yao)(yao),顯卡(ka)上的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)基本(ben)(ben)都(dou)是這(zhe)個(ge)作(zuo)(zuo)用(yong)(yong)。5．溫(wen)度補償：針對其它元件對溫(wen)度的(de)(de)(de)(de)(de)適應性不夠(gou)帶來的(de)(de)(de)(de)(de)影響(xiang),而(er)進行補償,改善電(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)的(de)(de)(de)(de)(de)穩定(ding)性。6．計時：電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)器(qi)與(yu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻器(qi)配合(he)使用(yong)(yong),確定(ding)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)的(de)(de)(de)(de)(de)時間常數。7．調諧：對與(yu)頻(pin)率相(xiang)關(guan)的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)進行系統(tong)調諧,比如手機、收音機、電(dian)(dian)(dian)(dian)(dian)(dian)(dian)視(shi)機。8．整流(liu)(liu)：在預定(ding)的(de)(de)(de)(de)(de)時間開或者關(guan)半閉(bi)導體開關(guan)元件。9．儲能(neng)：儲存電(dian)(dian)(dian)(dian)(dian)(dian)(dian)能(neng),用(yong)(yong)于(yu)必須要(yao)(yao)的(de)(de)(de)(de)(de)時候釋放(fang).例如相(xiang)機閃光燈,加熱(re)設備等(deng)等(deng)。

旁(pang)(pang)路(lu)某些設計(ji)的(de)(de)(de)電(dian)(dian)(dian)(dian)路(lu)，雙通(tong)道(大(da)電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)小(xiao)(xiao)電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong))或多通(tong)道(三個(ge)以上小(xiao)(xiao)電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)組成(cheng))，一(yi)(yi)般用(yong)在(zai)比(bi)效率更(geng)(geng)高(gao)(gao)(gao)的(de)(de)(de)dsp中(zhong)(zhong)(zhong)，為了(le)使頻(pin)(pin)(pin)(pin)(pin)率特性(xing)更(geng)(geng)好。)在(zai)電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)的(de)(de)(de)接地端，(地線的(de)(de)(de)寬度和(he)一(yi)(yi)次(ci)噪聲會(hui)造成(cheng)頻(pin)(pin)(pin)(pin)(pin)率特性(xing))，比(bi)如(ru)(ru)ccd布局中(zhong)(zhong)(zhong)的(de)(de)(de)旁(pang)(pang)路(lu)，要測量(liang)電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)接地端的(de)(de)(de)紋(wen)波(bo)。這(zhe)是指近端。為了(le)濾(lv)除(chu)DC饋線中(zhong)(zhong)(zhong)的(de)(de)(de)所有交流分(fen)量(liang)，可(ke)以并聯不同(tong)的(de)(de)(de)電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)器。低(di)(di)頻(pin)(pin)(pin)(pin)(pin)濾(lv)波(bo)要求電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)大(da)，但(dan)引線電(dian)(dian)(dian)(dian)感不適合(he)高(gao)(gao)(gao)頻(pin)(pin)(pin)(pin)(pin)濾(lv)波(bo)，高(gao)(gao)(gao)頻(pin)(pin)(pin)(pin)(pin)濾(lv)波(bo)要求電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)小(xiao)(xiao)，不適合(he)低(di)(di)頻(pin)(pin)(pin)(pin)(pin)濾(lv)波(bo)。如(ru)(ru)果并聯，可(ke)以同(tong)時濾(lv)除(chu)高(gao)(gao)(gao)頻(pin)(pin)(pin)(pin)(pin)和(he)低(di)(di)頻(pin)(pin)(pin)(pin)(pin)。有些濾(lv)波(bo)電(dian)(dian)(dian)(dian)路(lu)并聯使用(yong)三個(ge)電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)，分(fen)別(bie)是電(dian)(dian)(dian)(dian)解(jie)電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)、紙電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)和(he)云母電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)，分(fen)別(bie)濾(lv)除(chu)工頻(pin)(pin)(pin)(pin)(pin)、音頻(pin)(pin)(pin)(pin)(pin)和(he)射頻(pin)(pin)(pin)(pin)(pin)。并聯電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)器的(de)(de)(de)esr也將更(geng)(geng)小(xiao)(xiao)。然(ran)后(hou)電(dian)(dian)(dian)(dian)路(lu)圖中(zhong)(zhong)(zhong)經常(chang)會(hui)出現(xian)一(yi)(yi)排(pai)排(pai)電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)，大(da)部分(fen)是0.1uf和(he)10uf。你如(ru)(ru)何計(ji)算大(da)小(xiao)(xiao)和(he)數(shu)量(liang)？電(dian)(dian)(dian)(dian)解(jie)電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)器多數(shu)采用(yong)卷繞結構(gou)，很容(rong)(rong)(rong)(rong)(rong)易擴大(da)體積，因(yin)此單位體積電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)量(liang)非常(chang)大(da)，比(bi)其它電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)大(da)幾倍到幾十倍。

施加在(zai)電(dian)(dian)(dian)解(jie)(jie)電(dian)(dian)(dian)容(rong)器兩端的(de)(de)電(dian)(dian)(dian)壓(ya)不能超(chao)過其(qi)允許的(de)(de)工(gong)作電(dian)(dian)(dian)壓(ya)。在(zai)設(she)計實際電(dian)(dian)(dian)路時(shi)，應(ying)根(gen)據(ju)具體情(qing)況留有一(yi)(yi)定(ding)的(de)(de)余(yu)量。在(zai)設(she)計穩(wen)壓(ya)電(dian)(dian)(dian)源(yuan)(yuan)(yuan)的(de)(de)濾波(bo)電(dian)(dian)(dian)容(rong)時(shi)，如(ru)果在(zai)交流電(dian)(dian)(dian)源(yuan)(yuan)(yuan)電(dian)(dian)(dian)壓(ya)為(wei)220~時(shi)，變(bian)壓(ya)器二次(ci)的(de)(de)整流電(dian)(dian)(dian)壓(ya)能達到22V，一(yi)(yi)般耐壓(ya)為(wei)25V的(de)(de)電(dian)(dian)(dian)解(jie)(jie)電(dian)(dian)(dian)容(rong)就能滿足要求。但如(ru)果交流電(dian)(dian)(dian)源(yuan)(yuan)(yuan)電(dian)(dian)(dian)壓(ya)波(bo)動較(jiao)大，有可能上升(sheng)到250V以上，比(bi)較(jiao)好選(xuan)擇耐壓(ya)30V以上的(de)(de)電(dian)(dian)(dian)解(jie)(jie)電(dian)(dian)(dian)容(rong)。電(dian)(dian)(dian)解(jie)(jie)電(dian)(dian)(dian)容(rong)器不應(ying)靠近電(dian)(dian)(dian)路中(zhong)的(de)(de)大功率(lv)加熱元件，以防止電(dian)(dian)(dian)解(jie)(jie)液(ye)因受熱而變(bian)干。為(wei)了過濾正負極(ji)性(xing)的(de)(de)信號，可以使用(yong)兩個極(ji)性(xing)相同的(de)(de)電(dian)(dian)(dian)解(jie)(jie)電(dian)(dian)(dian)容(rong)器串聯(lian)作為(wei)非極(ji)性(xing)電(dian)(dian)(dian)容(rong)器。電(dian)(dian)(dian)容(rong)器外殼、輔助(zhu)引出端子、陽極(ji)和(he)陰極(ji)以及電(dian)(dian)(dian)路板必須完全隔離(li)。MLCC成為(wei)使用(yong)數量較(jiao)多的(de)(de)電(dian)(dian)(dian)容(rong)。廣東(dong)固態(tai)電(dian)(dian)(dian)容(rong)貼片(pian)廠家直(zhi)銷

MLCC由于(yu)其(qi)內部結構的優勢，其(qi)ESR和ESL都具(ju)備(bei)獨特優勢。所以陶瓷電容具(ju)備(bei)更好的高(gao)頻特性。徐(xu)州貼片鋁電解電容哪家便宜

電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)承受溫度與壽(shou)(shou)命，在開關電(dian)(dian)(dian)(dian)源設計過程中(zhong)，不可(ke)避免(mian)地要挑選適用(yong)(yong)的(de)電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)。就100μF以(yi)上的(de)中(zhong)、大(da)容(rong)(rong)(rong)(rong)量產品(pin)來說，因(yin)為(wei)鋁(lv)電(dian)(dian)(dian)(dian)解(jie)(jie)(jie)電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)的(de)價格便(bian)宜(yi)(yi)，所以(yi)，迄今使用(yong)(yong)的(de)較(jiao)為(wei)普遍(bian)。但是(shi),較(jiao)近幾年卻發(fa)生了明(ming)顯變化(hua)，避免(mian)使用(yong)(yong)鋁(lv)電(dian)(dian)(dian)(dian)解(jie)(jie)(jie)電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)的(de)情(qing)況正在增加。出現這種(zhong)變化(hua)的(de)一個原因(yin)是(shi)，鋁(lv)電(dian)(dian)(dian)(dian)解(jie)(jie)(jie)電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)的(de)壽(shou)(shou)命往往會成為(wei)整個設備(bei)的(de)薄弱環(huan)節。電(dian)(dian)(dian)(dian)源模塊(kuai)制造(zao)廠家(jia)的(de)工程師表(biao)示：“對于鋁(lv)電(dian)(dian)(dian)(dian)解(jie)(jie)(jie)電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)這種(zhong)壽(shou)(shou)命有限的(de)元(yuan)件(jian)，如果可(ke)以(yi)不用(yong)(yong),就盡量不要采用(yong)(yong)。”因(yin)為(wei)鋁(lv)電(dian)(dian)(dian)(dian)解(jie)(jie)(jie)電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)內部的(de)電(dian)(dian)(dian)(dian)解(jie)(jie)(jie)液會蒸發(fa)或產生化(hua)學變化(hua)，導致靜電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)量減(jian)少(shao)或等效(xiao)串聯電(dian)(dian)(dian)(dian)阻(zu)(ESR)增大(da),隨著時間的(de)推移(yi)，電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)性能(neng)肯定會劣化(hua)。徐(xu)州貼片鋁(lv)電(dian)(dian)(dian)(dian)解(jie)(jie)(jie)電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)哪家(jia)便(bian)宜(yi)(yi)

江(jiang)蘇芯聲(sheng)(sheng)微電(dian)(dian)子科技(ji)有(you)限(xian)公司(si)(si)(si)目前(qian)已(yi)成(cheng)(cheng)為一家集(ji)產品研(yan)發、生(sheng)產、銷售相結(jie)合的(de)生(sheng)產型企(qi)(qi)業(ye)(ye)(ye)。公司(si)(si)(si)成(cheng)(cheng)立于(yu)2020-07-01，自(zi)(zi)成(cheng)(cheng)立以(yi)來(lai)一直秉(bing)承自(zi)(zi)我研(yan)發與(yu)技(ji)術(shu)引進(jin)相結(jie)合的(de)科技(ji)發展戰略。公司(si)(si)(si)主要經營電(dian)(dian)容(rong)，電(dian)(dian)感，電(dian)(dian)阻，其(qi)它(ta)電(dian)(dian)子元(yuan)器件(jian)等，我們始終(zhong)堅(jian)持以(yi)可(ke)靠的(de)產品質(zhi)(zhi)(zhi)量(liang)，良好(hao)(hao)(hao)的(de)服(fu)務理念，優惠的(de)服(fu)務價格誠信和讓利于(yu)客戶(hu)，堅(jian)持用自(zi)(zi)己(ji)的(de)服(fu)務去打動(dong)客戶(hu)。芯聲(sheng)(sheng)微致(zhi)力于(yu)開拓國內市場，與(yu)電(dian)(dian)子元(yuan)器件(jian)行業(ye)(ye)(ye)內企(qi)(qi)業(ye)(ye)(ye)建(jian)立長期穩(wen)定的(de)伙伴關系，公司(si)(si)(si)以(yi)產品質(zhi)(zhi)(zhi)量(liang)及良好(hao)(hao)(hao)的(de)售后服(fu)務，獲得客戶(hu)及業(ye)(ye)(ye)內的(de)一致(zhi)好(hao)(hao)(hao)評。江(jiang)蘇芯聲(sheng)(sheng)微電(dian)(dian)子科技(ji)有(you)限(xian)公司(si)(si)(si)通過(guo)多年的(de)深耕(geng)細作(zuo)，企(qi)(qi)業(ye)(ye)(ye)已(yi)通過(guo)電(dian)(dian)子元(yuan)器件(jian)質(zhi)(zhi)(zhi)量(liang)體(ti)系認證，確保公司(si)(si)(si)各類產品以(yi)高技(ji)術(shu)、高性能、高精密度服(fu)務于(yu)廣(guang)大客戶(hu)。歡(huan)迎各界朋友蒞臨(lin)參觀、 指導(dao)和業(ye)(ye)(ye)務洽談。

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