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汽車噴油嘴選材-PA6汽車噴油嘴專用材料

相關標簽:美國ARC PA6、美國Service PA6、美國EnCom PA6塑膠粒、韌性良好 PA6、高光澤 PA6、很高的粘度 PA6塑膠粒

汽車噴油嘴選材-PA6汽車噴油嘴專用材料
汽車噴油嘴材料選擇要求:1-具有很強的機械性能和高的彎曲模量2-具有優異的耐熱性,高的熱變形溫度3-具有優良的硬度和強度4-高抗沖擊性,良好的沖擊性能5,耐高溫性好,熱變形溫度高6-良好的耐化學性,優異的耐油性7-極低的收縮率,良好的尺寸穩定性
PA6汽車噴油嘴專用材料,需要材料本身有很好的機械性能核耐熱性,具體請來電咨詢咨詢 。以上文獻若需轉載請備注出處:pbt塑料 //shanglikaiguan.cn/

延伸閱讀—PA6 古比雪夫氮 G15 NC201應用案列
玻纖增強 其它 其它 粒狀,本色
15%短纖增強(大眾第3方認可)
參考數據
性能項目 試驗條件[狀態] 測試方法 測試數據
密度 ISO 1183 1.243 g/cm3
灼燒殘余 ISO 1172 15.5
吸水率 ISO 62 2.3 %
模塑收縮率 平行方向 ISO 294-4 0.30
模塑收縮率 垂直方向 ISO 294-4 0.80
洛氏硬度 R標尺 ISO 2239/2 118
拉伸強度 ISO 527 130.1 MPa
斷裂伸長率 ISO 527 2.1 %
彎曲強度 ISO 178 177 MPa
彎曲模量 ISO 178 4739 MPa
簡支梁無缺口沖擊強度 23℃ ISO 179 78 KJ/m2
簡支梁缺口沖擊強度 23℃ ISO 179 8.6 KJ/m2
表面電阻率 IEC 60093 1012 Ω
介電強度 IEC 60243 22 kv/mm
熱變形溫度 1.80MPa ISO 75 195
熔點 ISO3461 220
阻燃性 UL-94 HB
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盛澤銘五(wu)金(jin)(jin)(jin)(jin)(jin)(jin)塑(su)膠實業有限公(gong)司(si) 是一家開發國(guo)際先進(jin)鍍(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)膜(mo)(mo)及(ji)(ji)貴金(jin)(jin)(jin)(jin)(jin)(jin)屬電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)化(hua)精(jing)飾(shi).五(wu)金(jin)(jin)(jin)(jin)(jin)(jin)鍍(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)件(jian)(jian)(jian).塑(su)膠鍍(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)件(jian)(jian)(jian)的(de)專業表面(mian)(mian)處(chu)理(li)的(de)老牌企業.擁有真(zhen)空離(li)(li)子(zi)鍍(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)膜(mo)(mo)車間(jian).水(shui)鍍(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)車間(jian).混(hun)鍍(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)車間(jian).后備(bei)有拋光拉(la)絲(si)部.分色(se)(se)化(hua)油(you)部.物性測試(shi)(shi)科(ke).擁有精(jing)良的(de)生(sheng)產(chan)檢(jian)(jian)查設備(bei).臺灣純水(shui)機.膜(mo)(mo)厚(hou)測試(shi)(shi)儀.AA光譜分析(xi)機.鹽水(shui)噴霧(wu)測試(shi)(shi)機.所有加(jia)工(gong)(gong)工(gong)(gong)藝均環(huan)(huan)(huan)保(bao)無毒并可通過歐盟指令.EN1811.12472測試(shi)(shi)及(ji)(ji)通過SGS檢(jian)(jian)測.主(zhu)營表面(mian)(mian)處(chu)理(li)產(chan)品(pin)范圍包(bao)括(kuo).五(wu)金(jin)(jin)(jin)(jin)(jin)(jin)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)鍍(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)加(jia)工(gong)(gong).鋁(lv)合(he)(he)金(jin)(jin)(jin)(jin)(jin)(jin)壓鑄.飾(shi)品(pin)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)鍍(du)(du)(du)(du)(du)(du)(du)(du)(du)(du).殼電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)鍍(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)金(jin)(jin)(jin)(jin)(jin)(jin).首飾(shi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)鍍(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)加(jia)工(gong)(gong).鋅合(he)(he)金(jin)(jin)(jin)(jin)(jin)(jin)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)鍍(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)加(jia)工(gong)(gong).奢侈品(pin)表面(mian)(mian)處(chu)理(li).工(gong)(gong)藝品(pin)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)鍍(du)(du)(du)(du)(du)(du)(du)(du)(du)(du).配(pei)(pei)件(jian)(jian)(jian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)鍍(du)(du)(du)(du)(du)(du)(du)(du)(du)(du).水(shui)晶.玉(yu)石電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)鍍(du)(du)(du)(du)(du)(du)(du)(du)(du)(du).動(dong)(dong)植(zhi)物標(biao)本電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)鍍(du)(du)(du)(du)(du)(du)(du)(du)(du)(du).電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)子(zi)五(wu)金(jin)(jin)(jin)(jin)(jin)(jin)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)鍍(du)(du)(du)(du)(du)(du)(du)(du)(du)(du).機械(xie)配(pei)(pei)件(jian)(jian)(jian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)鍍(du)(du)(du)(du)(du)(du)(du)(du)(du)(du).燈(deng)飾(shi)五(wu)金(jin)(jin)(jin)(jin)(jin)(jin)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)鍍(du)(du)(du)(du)(du)(du)(du)(du)(du)(du).鐘表配(pei)(pei)件(jian)(jian)(jian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)鍍(du)(du)(du)(du)(du)(du)(du)(du)(du)(du).家具五(wu)金(jin)(jin)(jin)(jin)(jin)(jin)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)鍍(du)(du)(du)(du)(du)(du)(du)(du)(du)(du).輔料(liao)配(pei)(pei)件(jian)(jian)(jian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)鍍(du)(du)(du)(du)(du)(du)(du)(du)(du)(du).通訊器材電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)鍍(du)(du)(du)(du)(du)(du)(du)(du)(du)(du).筆配(pei)(pei)件(jian)(jian)(jian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)鍍(du)(du)(du)(du)(du)(du)(du)(du)(du)(du).塑(su)膠電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)鍍(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)加(jia)工(gong)(gong)廠等飾(shi)品(pin)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)鍍(du)(du)(du)(du)(du)(du)(du)(du)(du)(du).可電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)鍍(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)加(jia)工(gong)(gong)材料(liao)及(ji)(ji)加(jia)工(gong)(gong)項目.鋁(lv)CNC.鋁(lv)合(he)(he)金(jin)(jin)(jin)(jin)(jin)(jin)壓鑄.鋅合(he)(he)金(jin)(jin)(jin)(jin)(jin)(jin)壓鑄.不銹鋼(gang)(gang)沖壓鈑金(jin)(jin)(jin)(jin)(jin)(jin).銅(tong)自(zi)動(dong)(dong)車床.鐵沖壓.碳鋼(gang)(gang).925銀(yin)(yin)飾(shi)品(pin)工(gong)(gong)藝品(pin).ABS注(zhu)塑(su).PC常規(gui)五(wu)金(jin)(jin)(jin)(jin)(jin)(jin)塑(su)膠環(huan)(huan)(huan)保(bao)水(shui)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)鍍(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)有.Pt950.鉑(bo)金(jin)(jin)(jin)(jin)(jin)(jin).電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)鍍(du)(du)(du)(du)(du)(du)(du)(du)(du)(du).白(bai)金(jin)(jin)(jin)(jin)(jin)(jin)/銠.電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)鍍(du)(du)(du)(du)(du)(du)(du)(du)(du)(du).PDP.鈀.電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)鍍(du)(du)(du)(du)(du)(du)(du)(du)(du)(du).PNP.鈀鎳(nie)(nie)(nie).電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)鍍(du)(du)(du)(du)(du)(du)(du)(du)(du)(du).PCP.鈀鈷.電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)鍍(du)(du)(du)(du)(du)(du)(du)(du)(du)(du).玫(mei)瑰金(jin)(jin)(jin)(jin)(jin)(jin)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)鍍(du)(du)(du)(du)(du)(du)(du)(du)(du)(du).酸(suan)金(jin)(jin)(jin)(jin)(jin)(jin)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)鍍(du)(du)(du)(du)(du)(du)(du)(du)(du)(du).K金(jin)(jin)(jin)(jin)(jin)(jin)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)鍍(du)(du)(du)(du)(du)(du)(du)(du)(du)(du).黃金(jin)(jin)(jin)(jin)(jin)(jin)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)鍍(du)(du)(du)(du)(du)(du)(du)(du)(du)(du).真(zhen)金(jin)(jin)(jin)(jin)(jin)(jin)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)鍍(du)(du)(du)(du)(du)(du)(du)(du)(du)(du).三元合(he)(he)金(jin)(jin)(jin)(jin)(jin)(jin)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)鍍(du)(du)(du)(du)(du)(du)(du)(du)(du)(du).厚(hou)金(jin)(jin)(jin)(jin)(jin)(jin)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)鍍(du)(du)(du)(du)(du)(du)(du)(du)(du)(du).厚(hou)銀(yin)(yin)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)鍍(du)(du)(du)(du)(du)(du)(du)(du)(du)(du).白(bai)銅(tong)錫電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)鍍(du)(du)(du)(du)(du)(du)(du)(du)(du)(du).三價白(bai)鉻(ge)(ge)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)鍍(du)(du)(du)(du)(du)(du)(du)(du)(du)(du).三價黑鉻(ge)(ge)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)鍍(du)(du)(du)(du)(du)(du)(du)(du)(du)(du).低溫黑鉻(ge)(ge)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)鍍(du)(du)(du)(du)(du)(du)(du)(du)(du)(du).碳電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)鍍(du)(du)(du)(du)(du)(du)(du)(du)(du)(du).黑鎳(nie)(nie)(nie)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)鍍(du)(du)(du)(du)(du)(du)(du)(du)(du)(du).錫電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)鍍(du)(du)(du)(du)(du)(du)(du)(du)(du)(du).鎳(nie)(nie)(nie)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)鍍(du)(du)(du)(du)(du)(du)(du)(du)(du)(du).三價鉻(ge)(ge)鋅電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)鍍(du)(du)(du)(du)(du)(du)(du)(du)(du)(du).珍(zhen)珠(zhu)鎳(nie)(nie)(nie)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)鍍(du)(du)(du)(du)(du)(du)(du)(du)(du)(du).珍(zhen)珠(zhu)金(jin)(jin)(jin)(jin)(jin)(jin)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)鍍(du)(du)(du)(du)(du)(du)(du)(du)(du)(du).珍(zhen)珠(zhu)銀(yin)(yin)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)鍍(du)(du)(du)(du)(du)(du)(du)(du)(du)(du).珍(zhen)珠(zhu)鉻(ge)(ge)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)鍍(du)(du)(du)(du)(du)(du)(du)(du)(du)(du).青銅(tong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)鍍(du)(du)(du)(du)(du)(du)(du)(du)(du)(du).仿白(bai)金(jin)(jin)(jin)(jin)(jin)(jin)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)鍍(du)(du)(du)(du)(du)(du)(du)(du)(du)(du).紅(hong)銅(tong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)鍍(du)(du)(du)(du)(du)(du)(du)(du)(du)(du).古(gu)(gu)(gu)金(jin)(jin)(jin)(jin)(jin)(jin)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)鍍(du)(du)(du)(du)(du)(du)(du)(du)(du)(du).古(gu)(gu)(gu)銀(yin)(yin)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)鍍(du)(du)(du)(du)(du)(du)(du)(du)(du)(du).青古(gu)(gu)(gu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)鍍(du)(du)(du)(du)(du)(du)(du)(du)(du)(du).白(bai)古(gu)(gu)(gu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)鍍(du)(du)(du)(du)(du)(du)(du)(du)(du)(du).紅(hong)古(gu)(gu)(gu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)鍍(du)(du)(du)(du)(du)(du)(du)(du)(du)(du).紫(zi)古(gu)(gu)(gu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)鍍(du)(du)(du)(du)(du)(du)(du)(du)(du)(du).咖(ka)古(gu)(gu)(gu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)鍍(du)(du)(du)(du)(du)(du)(du)(du)(du)(du).錫古(gu)(gu)(gu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)鍍(du)(du)(du)(du)(du)(du)(du)(du)(du)(du).及(ji)(ji)各種亮(liang)色(se)(se)亞(ya)色(se)(se)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)鍍(du)(du)(du)(du)(du)(du)(du)(du)(du)(du).雙色(se)(se)拉(la)絲(si)或分色(se)(se).多(duo)色(se)(se)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)鍍(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)等.環(huan)(huan)(huan)保(bao)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)鍍(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)有.環(huan)(huan)(huan)保(bao)鎳(nie)(nie)(nie).環(huan)(huan)(huan)保(bao)鉻(ge)(ge).環(huan)(huan)(huan)保(bao)槍色(se)(se).環(huan)(huan)(huan)保(bao)黑鎳(nie)(nie)(nie).環(huan)(huan)(huan)保(bao)青古(gu)(gu)(gu)銅(tong).紅(hong)古(gu)(gu)(gu)銅(tong).無鎳(nie)(nie)(nie)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)鍍(du)(du)(du)(du)(du)(du)(du)(du)(du)(du).所有鍍(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)種符合(he)(he)新標(biao)準(zhun).符合(he)(he)國(guo)際通用環(huan)(huan)(huan)保(bao)標(biao)準(zhun).鉛.鎘.汞.六價鉻(ge)(ge)不超標(biao).分色(se)(se)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)鍍(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)有.叻間(jian)槍.叻間(jian)金(jin)(jin)(jin)(jin)(jin)(jin).槍色(se)(se)間(jian)金(jin)(jin)(jin)(jin)(jin)(jin).金(jin)(jin)(jin)(jin)(jin)(jin)間(jian)銀(yin)(yin).珍(zhen)珠(zhu)間(jian)金(jin)(jin)(jin)(jin)(jin)(jin).珍(zhen)珠(zhu)鉻(ge)(ge)間(jian)珍(zhen)珠(zhu)金(jin)(jin)(jin)(jin)(jin)(jin).珍(zhen)珠(zhu)叻件(jian)(jian)(jian)金(jin)(jin)(jin)(jin)(jin)(jin)等等.瑞士標(biao)準(zhun)真(zhen)空離(li)(li)子(zi)鍍(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)有.IPG.鈦金(jin)(jin)(jin)(jin)(jin)(jin).PG.爐內(nei)(nei)K金(jin)(jin)(jin)(jin)(jin)(jin).PGR.爐內(nei)(nei)玫(mei)瑰金(jin)(jin)(jin)(jin)(jin)(jin).PG.爐內(nei)(nei)1N14色(se)(se).2N18色(se)(se).IPS.不銹鋼(gang)(gang)色(se)(se).IP黑.IP槍色(se)(se).IP氮化(hua)鈦.IP紫(zi)色(se)(se).IP咖(ka)啡色(se)(se).IP棕色(se)(se).IP蘭(lan).IP鉻(ge)(ge).IP紅(hong).IP分色(se)(se).多(duo)色(se)(se).鍍(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)膜(mo)(mo)及(ji)(ji)IP鍍(du)(du)(du)(du)(du)(du)(du)(du)(du)(du)厚(hou)膜(mo)(mo)等秉承.顧客至(zhi)上(shang).銳(rui)意進(jin)取.的(de)經營理(li)念.堅持.客戶(hu).的(de)原則(ze)為廣大客戶(hu)提供優質的(de)服務的(de)誠信.實力和(he)產(chan)品(pin)質量獲得業界的(de)認可.歡迎各界朋友(you)蒞臨參觀(guan)

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