Magento multi inventory工作

筛选

我最近的搜索
筛选项:
预算
类型
技能
语言
    工作状态
    2,000 magento multi inventory 份搜到的工作,货币单位为 USD

    ...and defi; Eliminate the access threshold of planting industry and improve the user experience; Provide better utilization of funds; Create powerful optimizations to provide the best interests for users of defi; Promote encryption adoption. Signature features: Compared with other platforms, a single asset with the same or higher apyiapr (no LP token required). Zero agricultural transaction costs. Multi Chain agriculture (BSC, eh, polygon, etc.)....

    $250 - $750
    $250 - $750
    0 个竞标

    货物管理,人员管理。货物管理分库存和包装。人员管理分每天的工作时间和采摘量 Managing the employee working time, and takes they have done in one day. The inventory management, in stock number, and package number.

    $1474 (Avg Bid)
    $1474 平均报价
    6 个竞标

    我需要一个安卓app。我已经有设计稿了,只需要对其进行搭建。

    $181 (Avg Bid)
    $181 平均报价
    13 个竞标

    Development language is not required, the budget is 10,000 RMB, the price can be discussed Main function: The software uses the QQipad protocol to automatically exit the QQ discussion group (also called multi-person chat) Need to be green software without installation and direct operation, to minimize the background operation QQ exists in the discussion group will automatically retreat, must be seconds back Details: If the QQ of the login protocol is bound to the security device, you need to pop up the phone verification or QQ security center verification to ensure that you can log in and use normally. After the login is successful, the current status is displayed next to it, and then you can start and stop the button. After starting the run, the list of historical messages below...

    $1111 (Avg Bid)
    $1111 平均报价
    1 个竞标

    magento mysql查询量很大,cpu负载超过 1000%

    $68 (Avg Bid)
    $68 平均报价
    6 个竞标
    magento 网站 已经结束 left

    我想建一个简洁的MAGENTO网站,主要用于快速展示商品价格,页面设计已经完成·。

    $1249 (Avg Bid)
    $1249 平均报价
    11 个竞标

    We have completed the graphic design and graphic materials, to speed up the project that want additional resource to help us to code for HTML 5 pages. - Adaptive HTML for mobile devices - Multi- environment support(Iphone 6 - 8, Iphone X and android phones) - Expected 2.5 weeks to complete entire page development, 0.5 weeks for testing and fixing - Basic test from developer before releasing every build to us. Final acceptance test will done by us - NDA is needed before start sharing project infomation 目前我们正在开发一个餐厅订单后台处理的平台,需要另外一名freelance来加速HTML5的开发进程。 - 目前我们已经完成了页面额设计和PS素材的制作,开发人员可以直接使用。 - 自适应网页制作,尤其是针对不同的移动设备(Iphone 6 - 8, Iphone X and android phones) - 希望在两周半的时候完成页面的开发(希望每两两天提交代码,以便早点检查和反馈),大概3-5天做验收测试和问题修复 - 希望开发人员会做基本的自测,确保发给我们验收的内容有一定的质量。当然我们也很希望开发者可用提出一些专业的建议和意见 - 需要和我们签订保密协...

    $1063 (Avg Bid)
    $1063 平均报价
    47 个竞标

    我需要您来为我开发一些软件。该软件需适配Windows。

    $159 (Avg Bid)
    $159 平均报价
    1 个竞标
    Project for Tong D. 已经结束 left

    我要做个magento 2网站,你有微信不,

    $11 (Avg Bid)
    $11 平均报价
    1 个竞标
    Magento 2 二次开发 已经结束 left

    Magento 2 二次开法一个和这个网站一样的网站,界面和功能一样

    $217 (Avg Bid)
    $217 平均报价
    11 个竞标

    开发麦进斗都多商户模式,前端后端开发,手机端电脑端,部分以买插件,只需要对商城进行再次改造,符合国内用户习惯,和淘宝差不多,但是不需要那么强大功能,只需要小规模,大部分已有插件,开发二手商城,社区等,物流再次开发可QQ联系我939808262请备注

    $4379 (Avg Bid)
    $4379 平均报价
    6 个竞标

    卖进斗二次开发,改造成多商户模式,大部分准备购买插件,没有插件的地方需要开发,可QQ[The administrator removed this message due to encouraging communication outside Freelancer.com, which breaches our Terms and Conditions - Section 13:Communication With Other Users.]联系请备注哦

    $10392 (Avg Bid)
    $10392 平均报价
    15 个竞标

    magento搭建一个购物系统,网站框架会有具体要求,非简单套用模板。其中最主要的是包含一个DIY自助设计系统,用户可以在线选择现在的图案或都上传自己的图片,简单编辑,形成成品,要求有比较真实的预览效果,非简单贴图。最后结合magento在线下单。 参考DIY系统 语言:javascript,HTML5, PHP 希望有此方面经验的高手联系,没有经验的请勿扰。谢谢!!

    $2155 (Avg Bid)
    $2155 平均报价
    8 个竞标
    创建网站 已经结束 left

    可用magento制作一个商城网站及后期一些维护修改。后期还有考虑用wordpress做b2b的网站。

    $195 (Avg Bid)
    $195 平均报价
    6 个竞标

    现有的网站是一个登记员工和借还电脑的系统。PHP 添加多人的借贷 1. Step, Select user from usertype Student/teacher/accounting. Show only Users how are not assigned, and with status ACTIVE. Should implement with search function which I had made. 2. Multi select students by checkbox, with footer number and those students will be repeated in next page 3, Show date range picker, preview those students you have chosen, and then chosen start date and end date 4. Click button to send, then the data add to database, can cancel seletion anytime

    $160 (Avg Bid)
    $160 平均报价
    2 个竞标

    新网站销售石头珠子为主还有一些时尚珠宝首饰。以后会增加主域名。网站为magento系统。 你需要做前期SEO,布置每个目录的meta keyword等信息,完善SEO。方便后期的google 广告建设。聊得好,后期的google广告也给你做。

    $74 (Avg Bid)
    加精 加急
    $74 平均报价
    6 个竞标

    客户名單,出單,Call List,Sales Report & Booking Order。

    $184 (Avg Bid)
    $184 平均报价
    6 个竞标

    我们公司由风险投资VC资本支持, 我们专注于发展/本土化高端品牌,正在打造成中国最大的休闲娱乐公司。我们正跟海內外的行业佼佼者合作, 开展不同的项目, 包括:马术中心、老爷车俱乐部 等。在上海的旗舰项目, 将成全国最顶尖的马术中心和家庭俱乐部, 老爷车俱乐部。 Magic is a venture backed company, specializing in developing/localising worldwide entertainment & leisure brands. We are on track to become the largest multi-brands, location-based leisure & entertainment management company in China. Projects include: family club, equine centre, classic car club, art museum, theme park, etc." logo用来代表上海迈奇公司旗下Arion高端英式家庭俱乐部,马术俱乐部,老爷车会所等,希望设计有品味,有质感。 Our logo will represent our "Arion" high end UK style family club, equine club and classic car club, looking for creative, elegant and quality designs. 我们需要3个logo, Arion 为主要的公司Logo, 然后Arion 马术俱乐部, Arion 老爷车俱乐部。 We are looking for 3 logos, Ar...

    $83 (Avg Bid)
    $83 平均报价
    3 个竞标

    我有进行中的、与之前的项目相关的工作Magento Minor Issues Fix'

    $12 / hr (Avg Bid)
    $12 / hr 平均报价
    1 个竞标

    我有进行中的、与之前的项目相关的工作Solve the Magento E-mail Sending Failure Problem'

    $6 / hr (Avg Bid)
    $6 / hr 平均报价
    1 个竞标
    magento 建站 已经结束 left

    magento 建站 magento 二次开发 数据库备份,维护 网站安全维护

    $194 (Avg Bid)
    $194 平均报价
    4 个竞标
    创建网站 已经结束 left

    magento 模版,汉化 并且能够根据客户的要求修改模版模块。

    $1707 (Avg Bid)
    $1707 平均报价
    5 个竞标
    Magento自适应网站 已经结束 left

    我们是一家餐厅食材供应平台(餐饮食材供应链管理) 1.自适应 2.符合中国人购物习惯 3.微信登陆,QQ登陆,支付宝或淘宝登陆 4.微信支付,支付宝支付 5.报表定制 主要流程: 1-餐厅每晚24:00前通过我们的微店或者网站下订单, 2-系统把每家订单统一分类汇总(白菜 1+2+3+5+50;土豆:100+40+30+10+20;猪肉:2+3+5+7+10) 3-在系统做一下记录这个订单前期我们系统有个叫做采购的用户能够直接看到每天系统自动生成的采购单,由采购根据加入系统的供应商信息和报价去供应商处采购,或者由系统自动将采购单发送给相应品类的供应商 4-系统根据客户信息和车辆运载能力自动设计或人工干预设计物流配送线路 4-供应商根据我们的采购需求为我们供货 5-货物入库,由分拣员根据分配到的分拣订单开始分拣,打包,贴标 6-验货员验货后扫码装车,由第三方物流根据我们系统设计的物流配送路线统一配送 7-餐厅验货录入实际收货数量,涉及到退货和补货的问题,餐厅根据该数量和我们公司结算,我们公司也根据该收货数量和供应商结算 8-物流配送车辆返回仓库,交接收货单单据和退换货

    $2777 (Avg Bid)
    $2777 平均报价
    4 个竞标

    制作一个英文版外贸电子商务网站 开发语言:php或者magento zencart二次开发 参考网站: 具体要求: 1、功能模块: 前台功能:产品管理系统, 搜索系统,购物车功能,支付系统,订单管理系统,会员管理系统,邮件系统,上传下载系统,价格计算系统,返利销售佣金系统,QA功能,产品评价系统 后台功能:会员管理系统;新闻、信息、广告发布系统;页面访问 统计;Tickets功能;站内信息检索系统...... 2、网站维护: 服务商需要提供后期维护支持及网站后台功能培训 3、仅制作英文版,可以参考,除秒杀和团购,论坛功能外,其它功能都要。 4、其他要求: 必须有过使用zencart magento 或者php语言开发过英文版外贸电商网站的实际案例。 工期约三个月内,能承诺最后不能完成的可以退回全部费用的。需要能提供制作周报以便跟踪进度 有能制作的公司请联系我,站内短信或者在下面回复邮箱都可以。 运行平台:PC端 已经有整理详细的需求文档,可以联系详谈。 服务商:深圳当地的优先,必须是有相关开发经验的服务商。 赏金可以沟通。 我的QQ20969265

    $5065 (Avg Bid)
    $5065 平均报价
    4 个竞标

    电商网站已经建好,运行一年,现需要后台添加一些功能,必须熟悉MAGENTO 和M2E 具体要实现功能包括 网页页面简单修改 后台ORDER 导出 移服务器 一些插件的安装和调试 熟悉MAGENTO和M2E都可以联系我,网站需要长期的技术支持,有可能会保持长期持续合作

    $250 - $750
    $250 - $750
    0 个竞标
    magento 主题修改 已经结束 left

    一个magento的项目,已经建立主题,按照客户需求进行修改。

    $227 (Avg Bid)
    $227 平均报价
    8 个竞标

    我们需要对比评估电商系统帮助我们的网店、微信商城、以及未来20个门店展开业务。需要你对比ShopEX, ECShop, V5Shop,Magento,HiSjop, IBM Websphere Commerce, Oracle 等等方案的性价比。这个价格, 是长期成本TCO.

    $10 - $30
    $10 - $30
    0 个竞标

    我的網頁是用MAGENTO編寫的, 接近完成的階段, 但有以下事項需要完成 (詳情請參考附件PDF.): 1) 改PAGE LINK 2) 小量版面修改 3) 我網頁有一個FLASH的試衣程式, 需要導入網頁和輸出XML數據同步.(我的試衣程式設計員會給你指引怎樣去完成工作.) 如有任何問題請與我聯繫.

    $193 (Avg Bid)
    $193 平均报价
    2 个竞标

    我有一个持续工作,之前与之相关的项目为'Ultimo theme customization (magento)'

    $10 / hr (Avg Bid)
    $10 / hr 平均报价
    1 个竞标
    Magento 仿站 已经结束 left

    Magento仿站,要求有Magento 2年以上开发经验的团队介入,团队中美工、UI、前端、开发、SEO、DBA什么的都要具备,可兼任,但一定要求是高手,能力一般者请勿打扰。具体需要模仿的网站本处不便公开,请直接Q我 5732730,工作内容详谈。

    $1500 - $3000
    $1500 - $3000
    0 个竞标

    我有和我们之前项目相关的持续性工作 'multi picture Upload bug of a website'

    $28 / hr (Avg Bid)
    $28 / hr 平均报价
    1 个竞标

    ... 」to display, the same as the current title 2: Hover picture or title: display all title names 「Refer to the home page picture,v 3: Only display "selling price" 4: Move the tick in the upper left corner to the lower right corner 5: For mobile phones or sliders that reduce the screen, , 「4/1」of the product image will be left on the far right (please refer to Picture 5) 6: Do not display the inventory and change it to a white background 7: The left and right 「Next button + slider function」 of the computer version. (Same button style and function as citiesocial) ★The slider sliding method for mobile phones or reduced screens needs to be as smooth as the homepage slider of "citiesocial". 8: Front-end sales page switching position function: We will add a switc...

    $152 (Avg Bid)
    $152 平均报价
    34 个竞标

    ...company, I'm looking to refine our operations and increase efficiency through the application of artificial intelligence (AI) and machine learning (ML). Key Areas for AI/ML Implementation: - Predictive Maintenance: Using equipment maintenance records to develop systems that can predict machinery servicing needs. - Demand Forecasting: Analysing sales and inventory data and establishing accurate, timely prediction models for better inventory management. - Route Optimization: Using GPS and transportation records to create route optimization models for improved transportation planning. Ideal Candidate: Should have relevant experience in AI/ML implementation, with a focus on predictive maintenance, demand forecasting, and route optimization. Experience with cold chain p...

    $341 (Avg Bid)
    $341 平均报价
    4 个竞标

    I am looking for an experienced and skillful e-commerce photographer and videographer to enhance my brand image. Specifically, I require services in: - Product photography - Lifestyle photography - Video production A time commitment of less than a week is expected for completion of this project. Ideal Skills: - Experience in E-commerce photography - Proficiency in both lifestyle and product photography - Expertise in video production - Ability to depict a brand's essence through visual storytelling. Your main goal will be to visually boost the brand's identity – reflecting its core values, persona, and character in every picture and video produced. If you are creative, effective, and efficient, then this is perfect for you!

    $6 / hr (Avg Bid)
    $6 / hr 平均报价
    2 个竞标

    I need an expert in Flutter for cross-platform mobile app development, specifically for both iOS and Android. For creation of a user-friendly app . This app will simplify the process of hiring household help like maids and cleaners by letting users hire them on an hourly basis, all through the app. The specialist should integrate essential features such as: - Functionality for in-app purchases - User reviews and ratings system - Booking and scheduling capability Additionally, the candidate should efficiently integrate a payment gateway and maps/location services. An understanding of these external services and APIs is critical for this project's success. Relevant experience in creating similar service apps would be beneficial. Key Responsibilities: Develop easy-to-use mobile a...

    $2543 (Avg Bid)
    $2543 平均报价
    74 个竞标

    I'm in need of a seasoned Facebook ads expert to manage my Facebook ad campaigns on the Facebook mobile app, desktop, and Instagram app. The primary goal of these campaigns is to increase website traffic, generate leads, and heighten brand awareness. Requirements: - Proven experience in running successful Facebook ad campaigns on multiple platforms - Ability to deliver on increasing website traffic, generating leads, and boosting brand awareness - Expertise in targeting specific audience demographics such as the 18-24 age group and male gender - Understanding of audience interests including travel, fitness, and technology, and how to tailor ads accordingly - Excellent communication skills and ability to provide comprehensive reports and insights Looking for someone who can hit the ...

    $101 (Avg Bid)
    $101 平均报价
    14 个竞标

    I'm in need of a multi-platform application that will facilitate the operations of shared taxis moving from point "A" to point "B". This shared taxi will be available for requests until 4 passengers have been accommodated, after which it will proceed to the destination. Key Features: - User Registration: The app should allow for easy and secure user registration. - Shared Taxi Request: Users can request for a shared taxi through the app. - Real-Time Location Tracking: The app should be able to track the shared taxi in real-time, allowing users to know the exact location. - Passenger and Driver Monitoring: I would like the ability to monitor both passengers and drivers for safety and service optimization. User Interaction: Users should be able to request a ...

    $783 (Avg Bid)
    $783 平均报价
    33 个竞标

    ...visually engaging, providing a true-to-life representation of the future building. - Expertise in multi-unit housing: Experience with similar projects or an understanding of the specific requirements for multi-family housing is highly desirable. - Compliance with building regulations: The plans should adhere to all relevant building codes and regulations, and be suitable for submission to the relevant authorities for permit approval. - Timeliness: A quick turnaround is important, so please only apply if you can commit to a reasonable deadline. Experience in creating 3D house plans for construction permit purposes is a huge plus. If you have experience in creating 3D renderings for multi-unit housing, that would be particularly relevant. Let me know your experie...

    $328 (Avg Bid)
    $328 平均报价
    35 个竞标

    ...to create a program that integrates a robot and RFID reading system, primarily for automating inventory management in a warehouse setting. The successful freelancer should strongly grasp robotics, RFID technology and software development. Their responsibility will be developing a software compatible with both Windows and Linux operating systems that smoothly facilitates communication between the robot and RFID reading system. Requirements: - Expertise in robotics and RFID technology - Proficient in coding for both Windows and Linux systems - Experience in developing software for inventory management - Understanding of warehouse processes and operations Goal: The objective is to make our inventory management more efficient, so the software should ensure precise ...

    $1679 (Avg Bid)
    $1679 平均报价
    27 个竞标

    I'm looking for a skilled game developer to create a tower defence game suitable ...wide audience: children, teens, and adults. Key Elements: - Tower Defence Gameplay: You'll be responsible for implementing the core mechanics of a classic tower defence game. - I want there is be a wide verity of towers such as gunners, rocket turrets, radio stations, bomber plane landing strips etc. along with implementation of ground soldiers that will go head to head with incoming waves. - Multi-Platform Development: The game should be optimized for both PC and mobile devices, ensuring smooth gameplay and user experience on all platforms. - Thematic Consistency: The game's theme should revolve around army, war, and combat. Visuals, sound, and gameplay should be designed to immerse...

    $762 (Avg Bid)
    $762 平均报价
    18 个竞标

    I'm looking for a skilled game developer to create a tower defence game suitable ...wide audience: children, teens, and adults. Key Elements: - Tower Defence Gameplay: You'll be responsible for implementing the core mechanics of a classic tower defence game. - I want there is be a wide verity of towers such as gunners, rocket turrets, radio stations, bomber plane landing strips etc. along with implementation of ground soldiers that will go head to head with incoming waves. - Multi-Platform Development: The game should be optimized for both PC and mobile devices, ensuring smooth gameplay and user experience on all platforms. - Thematic Consistency: The game's theme should revolve around army, war, and combat. Visuals, sound, and gameplay should be designed to immerse...

    $751 (Avg Bid)
    $751 平均报价
    25 个竞标

    I'm currently in need of assistance configuring the email sending events on Amazon SES. I aim to send emails from multiple domains. Key Tasks Involved: - Configuring email sending events like (opens,clicks) on campaigns, domains, configurations sets levels. Either directly from Amazon ses api or cloud-watch. Ideal skills and experience: - Previous experience with Amazon SES and cloudwatch. - Strong knowledge in AWS, specifically the SES service - Excellent problem-solving abilities,.

    $1031 (Avg Bid)
    $1031 平均报价
    28 个竞标

    ...involves: - Hosting the existing Java-based desktop application on an AWS cloud instance. - Implementing a multi-user access system. - Integrating a MySQL database component. - Developing a Python-based web interface for users to change settings. The ideal candidate should have: - Proficiency in Java, Python, and MySQL. - Prior experience with cloud hosting, particularly on AWS. - Knowledge of user access control systems, particularly Discretionary Access Control. - A good understanding of desktop-to-cloud migration. - Strong communication skills and attention to detail. We need a developer who can take a Java based desktop application and host it on a cloud instant of AWS. - must have multi user access - must have a database component - must have a web interface ...

    $1195 (Avg Bid)
    $1195 平均报价
    49 个竞标

    Description: We are seeking ...Spring boot and JavaScript. Excellent knowledge of Relational Databases, SQL and ORM technologies (JPA, Hibernate) 5+ years of hands-on experience in designing, developing, testing and maintaining RESTful APIs and Microservices 4+ years of experience in API layer security (e.g., JWT, OATH2), API logging, API testing, creating REST API documentation using Swagger and YAML or similar tools Work on multi-threading and optimize performance for complex systems. Nice to have: DevOps, CI/CD Additional Information: Compensation will be based on experience and skill level. If you're passionate about software development and interested in working on an exciting project, we'd love to hear from you! Please submit your resume and portfolio showcasing...

    $274 (Avg Bid)
    $274 平均报价
    7 个竞标

    ...the visual elements in the presentation for a cleaner, modern look. - **Content Clarity**: The content should be presented in a clear, concise manner. Experience in copywriting or content creation, particularly for sales, would be greatly beneficial. - **Interactivity**: I am keen on embedding interactive elements to make the presentation dynamic and immersive. Experience in incorporating multi-media within presentations is desired. The target audience of this presentation is potential & current clients. Therefore, your work should focus on making it persuasive, informative, and engaging. If my brand's distinct identity could brilliantly shine through the presentation to impress potential clients, that'd be best....

    $98 (Avg Bid)
    $98 平均报价
    61 个竞标

    I require a professional to write a script I can run to install DUO with a main purpose as a server setup for Redhat 9.3 . The server will run the DUO Multi-Factor Authentication application. I specifically need the SSH implementation of DUO Multi-Factor Authentication. I understand there is a file that requires 3 input value from my DUO Admin which could reference a File that I add those inputs or pulls from a file? This needs to be for system wide and SSH - Also no Public Key Auth. The ideal freelancer for this project should be proficient in server setup, Redhat, and DUO Multi-Factor Authentication. Experience with SSH implementation is a must. I'm looking for someone who can provide a fast and efficient setup, as well as a walkthrough of the installatio...

    $146 (Avg Bid)
    $146 平均报价
    15 个竞标

    I'm looking for a remote part-time data entry professional with a background in e-commerce. Key Responsibilities: - Data entry: Inputting information into our e-commerce system - Product details: Ensuring that product information is accurate and up-to-date - Inventory management: Monitoring stock levels, making updates as needed The ideal candidate should have: - Experience in data entry - Familiarity with e-commerce platforms - Strong attention to detail - Good time-management skills, as this is a part-time role - Excellent communication skills, as you'll need to liaise with the rest of the team If you're looking for a part-time gig and are confident in your data entry skills, I'd love to hear from you.

    $18 / hr (Avg Bid)
    $18 / hr 平均报价
    53 个竞标

    I'm in need of an experienced freelancer to help me develop a prototype. The main goal of the project is to improve transaction management, focusing on data integrity particularly, using Spring and Hibernate with Oracle Database. Key Tasks: - Help build a prototype emphasizing data integrity in transaction management. - Ensure that all database operations are handled in an atomic manner. Ideal Skills and Experience: - Proficiency with Spring, Hibernate, Narayana JTA, and Oracle database integration. - Solid understanding of transaction management, with a specific focus on data integrity. - Experience with building prototypes and handling complex queries and procedures for database interaction. - Ability to ensure database operations across multiple databases are atomic. - Ability t...

    $566 (Avg Bid)
    $566 平均报价
    3 个竞标

    **Your Bidding Amount is Final. No change allowed later**##Please read the attached file for details## I have an existing Online Stamp Inventory for Postal Stamp Collectors in my site. It is made in CakePHP. I need to add some features to it and repair current feature. I want to add Export feature, improve search feature and add the feature of uploading images/document, repair Year field, URl field, make the current captcha and email verification system better. Further, I need to add Subscription feature. Free Users can add limited number of entries whereas Paid Subscribers can get full features. See the site: This is very easy Project. Just making Form fields and report generating. Lowest bidder will win this project. You don't need to develop

    $23 (Avg Bid)
    $23 平均报价
    9 个竞标

    ...platforms to assess and propose a new tech stack for my virtual mediation business. Description: Entrepreneur looking for a skilled IT business consultant to recommend a cutting-edge tech stack and workflow recommendation for our new virtual mediation business. We aim to create an efficient platform that enhances client experience and automates crucial processes. Key Features: • Client Portal: Multi-client support for mediation cases and pre and post-mediation coaching. • Onboarding Automation: Streamlined forms, welcome packages, contracts, and payments. • Online Scheduler: Calendar integration for seamless appointment management. • Video Conferencing: Includes breakout rooms and a whiteboard for effective sessions. • Agreement Routing: Digital...

    $479 (Avg Bid)
    $479 平均报价
    56 个竞标