<cite id="nejma"></cite>
      1. <tfoot id="nejma"><strike id="nejma"></strike></tfoot>
        <wbr id="nejma"><menu id="nejma"></menu></wbr>
        激情伊人五月天久久综合,亚洲欧美色综合影院,女人与牲口性恔配视频免费,国产精品午夜无码AV天美传媒,AV最新高清无码专区,亚洲av麻豆aⅴ无码电影,人妻丰满熟妇无码区免费,国产精品+日韩精品+在线播放

        電子/電力

        方形 反射型 電纜型 NPN PZ-G41N 日本KEYENCE基恩士傳感器
        • 方形 反射型 電纜型 NPN PZ-G41N 日本KEYENCE基恩士傳感器

        • 型號
          PZ-G41N
          類型
          反射型
          長距離
          形狀
          矩形式
          輸出
          NPN
          連接形態
          線纜 (2 m) *1
          檢測距離
          1 m
          (檢測
          30 x 30 cm 的
          白紙時)
          光點直徑

          光源
          紅色 LED
          靈敏度調整
          1 圈旋鈕調整器 (230°)
          響應時間
          500 μs
          操作模式
          LIGHT-ON/DARK-ON (可用開關選擇)
          指示燈 (LED)
          輸出: 橙色 LED, 穩定操作: 綠色 LED
          控制輸出
          集電極開路輸出, 最大 30 V, 最大 100 mA, 殘余電壓: 最大 1 V
          保護電路
          相反極性、過流保護、突波吸收器
          抗干擾
          最多達 2 個裝置 (使用自動差異頻率功能)
          緊固力矩
          矩形式型號 (安裝孔零件): 最大 0.5 N·m
          額定
          電源電壓
          10 至 30 VDC、包括紋波 (P-P) 10 %
          消耗電流
          34 mA 以下
          環境抗耐性
          外殼防護級
          IEC:IP67/NEMA:4A、6、12/DIN:IP69K
          環境光照
          白熾燈:最大 5,000 lux、日光:最大 20,000 lux
          環境溫度
          -20 至 +55 °C (無凍結)
          相對濕度
          35 至 85 % RH (無凝結)
          抗震性
          10 至 55 Hz、雙振幅 1.5 mm、X,Y,Z 方向各 2 個小時
          耐沖擊性
          1,000 m/s2、X,Y,Z 方向各 6 次
          材料
          外殼, M18 螺帽
          (僅適用于螺紋式型號)
          玻璃纖維增強 PBT
          鏡頭蓋
          多芳基化合物 (PAR)
          微調器
          玻璃纖維增強聚酰胺 (PA)
          外殼嵌入部
          螺絲:鐵鍍鎳鋅、墊圈:腈丁二烯橡膠(NBR)
          線纜 (僅適用于電纜型號)
          聚氯乙烯 (PVC)
          連接器(只限附帶電纜的連接器型)

          配件
          操作手冊
          重量
          矩形式電纜型號:約 60 g (光透過型發射器:約 50 g)
          *1 對于連接器型號,電纜單獨出售

        方形 反射型 電纜型 NPN PZ-G41N 日本KEYENCE基恩士傳感器
        方形 反射型 電纜型 NPN PZ-G41N 日本KEYENCE基恩士傳感器
        方形 反射型 電纜型 NPN PZ-G41N 日本KEYENCE基恩士傳感器

        1
        XG-X series

        Model List

        Model Model Name Notice
        XG-X1002 0.47 megapixel camera-compatible Controller -
        XG-X1202 2 megapixel camera-compatible Controller -
        XG-X1502 5 megapixel camera-compatible Controller -
        XG-X2002 Supporting cameras of 470,000 pixels controller -
        XG-X2202 Supporting cameras of 2-million-pixel controller -
        XG-X2502 Supporting cameras of 5-million-pixel controller -
        XG-X2702 5 megapixel camera-compatible Controller -
        XG-X2802 Supporting 3D/Line Scan Camera controller -
        XG-X2902 Supporting 3D/Line Scan Camera controller -
        CA-035C Environment-resistant 0.31 megapixel camera (Color) -
        CA-035M Environment-resistant 0.31 megapixel camera (Monochrome) -
        CA-200C Environment-resistant 2 megapixel camera (Color) -
        CA-200M Environment-resistant 2 megapixel camera (Monochrome) -
        CA-H035C 16× speed, environment-resistant 0.31 megapixel camera (Color) -
        CA-H035M 16× speed, environment-resistant 0.31 megapixel camera (Monochrome) -
        CA-H048CX 16× speed, high-performance 0.47 megapixel camera (Color) -
        CA-H048MX 16× speed, high-performance 0.47 megapixel camera (Monochrome) -
        CA-H200C 16× speed, environment-resistant 2 megapixel camera (Color) -
        CA-H200CX 16× speed, high-performance 2 megapixel camera (Color) -
        CA-H200M 16× speed, environment-resistant 2 megapixel camera (Monochrome) -
        CA-H200MX 16× speed, high-performance 2 megapixel camera (Monochrome) -
        CA-H2100C 16x Speed Camera with 21 million pixels Colour -
        CA-H2100M 16x Speed Camera with 21 million pixels Monochrome -
        CA-H500C 16× speed, environment-resistant 5 megapixel camera (Color) -
        CA-H500CX 16× speed, high-performance 5 megapixel camera (Color) -
        CA-H500M 16× speed, environment-resistant 5 megapixel camera (Monochrome) -
        CA-H500MX 16× speed, high-performance 5 megapixel camera (Monochrome) -
        CA-HF2100C LumiTrax?-compatible 21 megapixel camera Color -
        CA-HF2100M LumiTrax?-compatible-compatible 21 megapixel camera Monochrome -
        CA-HF6400C 64 megapixel camera Color -
        CA-HF6400M 64 megapixel camera Monochrome -
        CA-HS035CH High-speed, small 0.31 megapixel camera (Camera) Color CMOS -
        CA-HS035CU High-speed, small 0.31 megapixel camera (Amplifier) Color CMOS -
        CA-HS035CUSO(6174) High-speed, small 0.31 megapixel camera (Amplifier) Color CMOS -
        CA-HS035MH High-speed, small 0.31 megapixel camera (Camera) Monochrome CMOS -
        CA-HS035MU High-speed, small 0.31 megapixel camera (Amplifier) Monochrome CMOS -
        CA-HS035MUSO(6173) High-speed, small 0.31 megapixel camera (Amplifier) Monochrome CMOS -
        CA-HS200C High-speed, small 2 megapixel camera Color CMOS -
        CA-HS200M High-speed, small 2 megapixel camera Monochrome CMOS -
        CA-HX048C Supporting LumiTrax? 16x Speed Colour camera -
        CA-HX048M Supporting LumiTrax? 16x Speed Monochrome camera -
        CA-HX200C Supporting LumiTrax? 16x Speed 2-megapixel Colour camera -
        CA-HX200M Supporting LumiTrax? 16x Speed 2-megapixel Monochrome camera -
        CA-HX500C Supporting LumiTrax? 16x Speed 5-megapixel Colour camera -
        CA-HX500M Supporting LumiTrax? 16x Speed 5-megapixel Monochrome camera -
        CA-NEC20E EtherCAT unit -
        CA-NEP20E EtherNet/IP? module -
        CA-NPN20E PROFINET module -
        CA-E200 Area camera input unit -
        OP-87983 USB Console -
        CA-E100 Input unit for area camera -
        CA-CF10 Camera cable (10m) for high-speed data transfer -
        CA-CF10E Camera extension cable (10m) for high-speed data transfer -
        CA-CF10L L-shape connecter camera cable (10m) for high-speed data transfer -
        CA-CF3 Camera cable (3m) for high-speed data transfer -
        CA-CF3L L-shape connecter camera cable (3m) for high-speed data transfer -
        CA-CF5 Camera cable (5m) for high-speed data transfer -
        CA-CF5E Camera extension cable (5m) for high-speed data transfer -
        CA-CF5L L-shape connecter camera cable (5m) for high-speed data transfer -
        CA-CH10BP High-flex, environmentally resistant camera cable 10 m -
        CA-CH10BX High-flex, repeater-dedicated extension cable 10m -
        CA-CH10P Environment-resistant Camera cables 10 m -
        CA-CH17R High-flex Camera cables 17 m -
        CA-CH3BEX Repeater high flex robotic camera cable 3m -
        CA-CH3BX High-flex, repeater-dedicated extension cable 3m -
        CA-CH3P Environment-resistant Camera cables 3 m -
        CA-CH5BP High-flex, environmentally resistant camera cable 5 m -
        CA-CH5BPE High-flex, environmentally resistant camera extension cable 5 m -
        CA-CH5BX High-flex, repeater-dedicated extension cable 5m -
        CA-CHX10U Amplifier for extension cables -
        CA-CNX10U Camera Cable -
        CA-F100 Fan Unit -
        CA-NCL20E CC-Link Unit -

        Back to top

        VJ series

        Model List

        Model Model Name Notice
        VJ-3002 Image processing unit -
        VJ-3302 Image processing unit -
        CA-HL02MX 2000 pixel line scan camera with LED pointer -
        CA-HL04MX 4000 pixel line scan camera with LED pointer -
        CA-HL08MX 8000 pixel line scan camera with LED pointer -
        VJ-H048CX 0.47 Megapixel Color -
        VJ-H048MX 0.47 Megapixel Monochrome -
        VJ-H200CX 2 Megapixel Color -
        VJ-H200MX 2 Megapixel Monochrome -
        VJ-H500CX 5 Megapixel Color -
        VJ-H500MX 5 Megapixel Monochrome -
        OP-88402 Ethernet cable 3 m -

        Back to top

        3D Vision series

        Model List

        Model Model Name Notice
        CV-X292A High-speed, Large-capacity Controller supporting LJ-V US Specification -
        CV-X292AP High-speed, Large-capacity Controller supporting LJ-V PNP type US Specification -
        CV-X292F Controller Advanced model US Specification -
        CV-X292FP Controller Advanced model US Specification PNP -
        XT-024 Inline 3D Appearance and Dimension Camera unit 24?mm 0.94" type -
        XT-060 Inline 3D Appearance and Dimension Camera unit 60?mm 2.36" type -
        XG-X2802 Supporting 3D/Line Scan Camera controller -
        CA-E100T 3D camera input unit -
        CA-CD10 PC connection cable 10m -
        CA-CD5 PC connection cable 5m -
        CA-EN100H Encoder head -
        CA-EN100U Encoder relay unit -

        Back to top

        3D VGR series

        Model List

        Model Model Name Notice
        CV-X482D 3D Vision-Guided Robotics Controller -
        RB-1200 3D Vision-Guided Robotics Camera -
        RB-500 3D Vision-Guided Robotics Camera -
        RB-800 3D Vision-Guided Robotics Camera -
        CA-E200T 3D Vision-Guided Robotics Camera Input Unit -
        CA-CD10 PC connection cable 10m -
        CA-CD5 PC connection cable 5m -

        Back to top

        Line Scan series

        Model List

        Model Model Name Notice
        XG-8502L Multi-camera Imaging System/Line Scan Camera Supporting Controller -
        XG-8502LP Multi-camera Imaging System/Line Scan Camera Supporting Controller -
        XG-8502P Multi-camera Imaging System/Controller -
        XG-8702L Multi-camera Imaging System/Line Scan Camera Supporting Controller -
        XG-8702LP Multi-camera Imaging System/Controller -
        XG-8802L Multi-camera Imaging System/Line Scan Camera Supporting Controller -
        XG-8802LP Multi-camera Imaging System/Line Scan Camera Supporting Controller -
        XG-X2802 Supporting 3D/Line Scan Camera controller -
        XG-X2902 Supporting 3D/Line Scan Camera controller -
        CA-HL02MX 2000 pixel line scan camera with LED pointer -
        CA-HL04MX 4000 pixel line scan camera with LED pointer -
        CA-HL08MX 8000 pixel line scan camera with LED pointer -
        XG-HL02M 8-speed 2048-pixel Line Scan Camera -
        XG-HL04M 16-speed 4096-pixel Line Scan Camera -
        XG-HL08M 16-speed 8192-pixel Line Scan Camera -
        CA-DZB15 Blue Line Light 150 mm -
        CA-DZB30 Blue Line Light 300 mm -
        CA-DZB45 Blue Line Light 450 mm -
        CA-DZB5 Blue Line Light 50 mm -
        CA-DZR15 Red Line Light 150 mm -
        CA-DZR30 Red Line Light 300 mm -
        CA-DZR45 Red Line Light 450 mm -
        CA-DZR5 Red Line Light 50 mm -
        CA-DZW10X Line lighting for LumiTrax (specular reflection mode) 100mm -
        CA-DZW15 White Line Light 150 mm -
        CA-DZW15D White Diffuse Line Lights 150 mm -
        CA-DZW30 White Line Light 300 mm -
        CA-DZW30D White Diffuse Line Lights 300 mm -
        CA-DZW30X Line lighting for LumiTrax (specular reflection mode) 300mm -
        CA-DZW45 White Line Light 450 mm -
        CA-DZW45D White Diffuse Line Lights 450 mm -
        CA-DZW5 White Line Light 50 mm -
        CA-DZW50X Line lighting for LumiTrax (specular reflection mode) 500mm -
        CA-E100L Line Scan Camera Input Unit -
        CA-E200L Line scan camera input unit for high-speed data transfer -
        CA-CF10 Camera cable (10m) for high-speed data transfer -
        CA-CF10E Camera extension cable (10m) for high-speed data transfer -
        CA-CF10L L-shape connecter camera cable (10m) for high-speed data transfer -
        CA-CF3 Camera cable (3m) for high-speed data transfer -
        CA-CF3L L-shape connecter camera cable (3m) for high-speed data transfer -
        CA-CF5 Camera cable (5m) for high-speed data transfer -
        CA-CF5E Camera extension cable (5m) for high-speed data transfer -
        CA-CF5L L-shape connecter camera cable (5m) for high-speed data transfer -
        CA-EN100H Encoder head -
        CA-EN100U Encoder relay unit -

        Back to top

        2D VGR series

        Model List

        Model Model Name Notice
        CA-CH3BEX Repeater high flex robotic camera cable 3m -

        Back to top

        XG-8000 series

        Model List

        Model Model Name Notice
        XG-8002 Multi-camera Imaging System/Controller -
        XG-8002P Multi-camera Imaging System/Controller -
        XG-8502 Multi-camera Imaging System/Controller -
        XG-8702 Multi-camera Imaging System/Controller -
        XG-8702P Multi-camera Imaging System/Controller -
        XG-8802 Multi-camera Imaging System/Controller -
        XG-8802P Multi-camera Imaging System/Controller -
        CA-035C Environment-resistant 0.31 megapixel camera (Color) -
        CA-035M Environment-resistant 0.31 megapixel camera (Monochrome) -
        CA-200C Environment-resistant 2 megapixel camera (Color) -
        CA-200M Environment-resistant 2 megapixel camera (Monochrome) -
        CA-H035C 16× speed, environment-resistant 0.31 megapixel camera (Color) -
        CA-H035M 16× speed, environment-resistant 0.31 megapixel camera (Monochrome) -
        CA-H200C 16× speed, environment-resistant 2 megapixel camera (Color) -
        CA-H200M 16× speed, environment-resistant 2 megapixel camera (Monochrome) -
        CA-H500C 16× speed, environment-resistant 5 megapixel camera (Color) -
        CA-H500M 16× speed, environment-resistant 5 megapixel camera (Monochrome) -
        CA-HS035CH High-speed, small 0.31 megapixel camera (Camera) Color CMOS -
        CA-HS035CU High-speed, small 0.31 megapixel camera (Amplifier) Color CMOS -
        CA-HS035CUSO(6174) High-speed, small 0.31 megapixel camera (Amplifier) Color CMOS -
        CA-HS035MH High-speed, small 0.31 megapixel camera (Camera) Monochrome CMOS -
        CA-HS035MU High-speed, small 0.31 megapixel camera (Amplifier) Monochrome CMOS -
        CA-HS035MUSO(6173) High-speed, small 0.31 megapixel camera (Amplifier) Monochrome CMOS -
        CA-HS200C High-speed, small 2 megapixel camera Color CMOS -
        CA-HS200M High-speed, small 2 megapixel camera Monochrome CMOS -
        XG-035C Digital Double-speed Color Camera for XG Series -
        XG-035M Digital Double-speed Black-and-white Camera for XG Series -
        XG-200C Digital 2-million-pixel Color Camera for XG Series -
        XG-200M Digital 2-million-pixel Black-and-white Camera for XG Series -
        XG-H035C Digital High-speed Color Camera for XG Series -
        XG-H035M Digital High-speed Black-and-white Camera for XG Series -
        XG-H100C Digital High-speed 1-million-pixel Color Camera for XG Series -
        XG-H100M Digital High-speed 1-million-pixel Black-and-white Camera for XG Series -
        XG-H200C Digital High-speed 2-million-pixel Color Camera for XG Series -
        XG-H200M Digital High-speed 2-million-pixel Black-and-white Camera for XG Series -
        XG-H2100C Digital High-speed Color Camera with 21 million pixels -
        XG-H2100M Digital High-speed Monochrome Camera with 21 million pixels -
        XG-H500C Digital High-speed 5-million-pixel Color Camera for XG Series -
        XG-H500M Digital High-speed 5-million-pixel Black-and-white Camera for XG Series -
        XG-S035CH (XG-S035C) Ultra Small Digital Double-speed Color Camera (Camera Section) for XG Series -
        XG-S035CU (XG-S035C) Ultra Small Digital Double-speed Color Camera (Control Section) for XG Series -
        XG-S035MH (XG-S035M) Ultra Small Digital Double-speed Black-and-white Camera (Camera Section) for XG Series -
        XG-S035MU (XG-S035M) Ultra Small Digital Double-speed Black-and-white Camera (Control Section) for XG Series -
        XG-S200CH (XG-S200C) Small Digital 2-million-pixel Color Camera (Camera Section) for XG Series -
        XG-S200CU (XG-S200C) Small Digital 2-million-pixel Color Camera (Control Section) for XG Series -
        XG-S200MH (XG-S200M) Small Digital 2-million-pixel Black-and-white Camera (Camera Section) for XG Series -
        XG-S200MU (XG-S200M) Small Digital 2-million-pixel Black-and-white Camera (Control Section) for XG Series -
        OP-84231 CV-5000/XG-7000/8000 Dedicated Console -
        CA-E800 Camera expansion unit -
        CA-EC80 Area camera Input unit -
        CA-EC80HX High-speed Camera Input unit -
        CA-NCL10E Controller Option -
        XG-E800 Camera Extension Unit for XG-8000 Series -
        CA-CH10BP High-flex, environmentally resistant camera cable 10 m -
        CA-CH10BX High-flex, repeater-dedicated extension cable 10m -
        CA-CH10P Environment-resistant Camera cables 10 m -
        CA-CH17R High-flex Camera cables 17 m -
        CA-CH3BEX Repeater high flex robotic camera cable 3m -
        CA-CH3BX High-flex, repeater-dedicated extension cable 3m -
        CA-CH3P Environment-resistant Camera cables 3 m -
        CA-CH5BP High-flex, environmentally resistant camera cable 5 m -
        CA-CH5BPE High-flex, environmentally resistant camera extension cable 5 m -
        CA-CH5BX High-flex, repeater-dedicated extension cable 5m -
        CA-CHX10U Amplifier for extension cables -
        CA-CNX10U Camera Cable -

        Back to top

        XG-7000 series

        Model List

        Model Model Name Notice
        XG-7002 Multi-camera Imaging System/Controller -
        XG-7002A Multi-camera Imaging System/Controller -
        XG-7002P Multi-camera Imaging System/Controller -
        XG-7502 Multi-camera Imaging System/Controller -
        XG-7502P Multi-camera Imaging System/Controller -
        XG-7702 Multi-camera Imaging System/Controller -
        XG-7702P Multi-camera Imaging System/Controller -
        CA-035C Environment-resistant 0.31 megapixel camera (Color) -
        CA-035M Environment-resistant 0.31 megapixel camera (Monochrome) -
        CA-200C Environment-resistant 2 megapixel camera (Color) -
        CA-200M Environment-resistant 2 megapixel camera (Monochrome) -
        CA-H035C 16× speed, environment-resistant 0.31 megapixel camera (Color) -
        CA-H035M 16× speed, environment-resistant 0.31 megapixel camera (Monochrome) -
        CA-H200C 16× speed, environment-resistant 2 megapixel camera (Color) -
        CA-H200M 16× speed, environment-resistant 2 megapixel camera (Monochrome) -
        CA-H500C 16× speed, environment-resistant 5 megapixel camera (Color) -
        CA-H500M 16× speed, environment-resistant 5 megapixel camera (Monochrome) -
        CA-HS035CH High-speed, small 0.31 megapixel camera (Camera) Color CMOS -
        CA-HS035CU High-speed, small 0.31 megapixel camera (Amplifier) Color CMOS -
        CA-HS035CUSO(6174) High-speed, small 0.31 megapixel camera (Amplifier) Color CMOS -
        CA-HS035MH High-speed, small 0.31 megapixel camera (Camera) Monochrome CMOS -
        CA-HS035MU High-speed, small 0.31 megapixel camera (Amplifier) Monochrome CMOS -
        CA-HS035MUSO(6173) High-speed, small 0.31 megapixel camera (Amplifier) Monochrome CMOS -
        CA-HS200C High-speed, small 2 megapixel camera Color CMOS -
        CA-HS200M High-speed, small 2 megapixel camera Monochrome CMOS -
        XG-035C Digital Double-speed Color Camera for XG Series -
        XG-035M Digital Double-speed Black-and-white Camera for XG Series -
        XG-200C Digital 2-million-pixel Color Camera for XG Series -
        XG-200M Digital 2-million-pixel Black-and-white Camera for XG Series -
        XG-H035C Digital High-speed Color Camera for XG Series -
        XG-H035M Digital High-speed Black-and-white Camera for XG Series -
        XG-H100C Digital High-speed 1-million-pixel Color Camera for XG Series -
        XG-H100M Digital High-speed 1-million-pixel Black-and-white Camera for XG Series -
        XG-H200C Digital High-speed 2-million-pixel Color Camera for XG Series -
        XG-H200M Digital High-speed 2-million-pixel Black-and-white Camera for XG Series -
        XG-H500C Digital High-speed 5-million-pixel Color Camera for XG Series -
        XG-H500M Digital High-speed 5-million-pixel Black-and-white Camera for XG Series -
        XG-S035CH (XG-S035C) Ultra Small Digital Double-speed Color Camera (Camera Section) for XG Series -
        XG-S035CU (XG-S035C) Ultra Small Digital Double-speed Color Camera (Control Section) for XG Series -
        XG-S035MH (XG-S035M) Ultra Small Digital Double-speed Black-and-white Camera (Camera Section) for XG Series -
        XG-S035MU (XG-S035M) Ultra Small Digital Double-speed Black-and-white Camera (Control Section) for XG Series -
        XG-S200CH (XG-S200C) Small Digital 2-million-pixel Color Camera (Camera Section) for XG Series -
        XG-S200CU (XG-S200C) Small Digital 2-million-pixel Color Camera (Control Section) for XG Series -
        XG-S200MH (XG-S200M) Small Digital 2-million-pixel Black-and-white Camera (Camera Section) for XG Series -
        XG-S200MU (XG-S200M) Small Digital 2-million-pixel Black-and-white Camera (Control Section) for XG Series -
        OP-84231 CV-5000/XG-7000/8000 Dedicated Console -
        CA-NCL10E Controller Option -
        XG-E700 Camera Extension Unit for XG-7000 Series -
        XG-E700A Analog Camera Extension Unit for XG-7000 Series -
        CA-CH10BP High-flex, environmentally resistant camera cable 10 m -
        CA-CH10BX High-flex, repeater-dedicated extension cable 10m -
        CA-CH10P Environment-resistant Camera cables 10 m -
        CA-CH17R High-flex Camera cables 17 m -
        CA-CH3BEX Repeater high flex robotic camera cable 3m -
        CA-CH3BX High-flex, repeater-dedicated extension cable 3m -
        CA-CH3P Environment-resistant Camera cables 3 m -
        CA-CH5BP High-flex, environmentally resistant camera cable 5 m -
        CA-CH5BPE High-flex, environmentally resistant camera extension cable 5 m -
        CA-CH5BX High-flex, repeater-dedicated extension cable 5m -
        CA-CHX10U Amplifier for extension cables -
        CA-CNX10U Camera Cable -

        ?

        LOGO

        ?153 3523 8557?153 3523 8557

        無錫市錫山區錫北鎮東房橋文八路142號無錫市錫山區錫北鎮東房橋文八路142號

        wxjinghe@163.comwxjinghe@163.com

        二維碼

        Copyright © 2022 All Rights Reserved 璟和電子科技(無錫)有限公司 版權所有

        網站ICP備案號:蘇ICP備2022014582號

        技術支持:牽牛建站 | 中科商務網  | 網站管理