跳转至内容
EasyGPAEasyGPA
EasyGPA
您的海外学习导师
  • 首页
  • 课程辅导
    • 考前辅导
    • Dissertation辅导
    • 学期辅导
    • 过渡课程
  • ACCA辅导
  • 润色&批改
  • 名师风采
  • 干货集锦
  • 常见问题
  • 联系我们
  • 注册
  • 登录
  • 首页
  • 课程辅导
    • 考前辅导
    • Dissertation辅导
    • 学期辅导
    • 过渡课程
  • ACCA辅导
  • 润色&批改
  • 名师风采
  • 干货集锦
  • 常见问题
  • 联系我们
  • 注册
  • 登录

EasyGPA用户注册协议

User Registration Agreement

EasyGPA用户注册协议

一、服务条款的确认及接受
1、EasyGPA网站(以下称“本网站”)各项电子服务的所有权和运作权归属于“EasyGPA”所有,本网站提供的服务将完全按照其发布的服务条款和操作规则严格执行。您确认所有服务条款并完成注册程序时,本协议在您与本网站间成立并发生法律效力,同时您成为本网站正式用户。
2、根据国家法律法规变化及本网站运营需要,EasyGPA有权对本协议条款及相关规则不时地进行修改,修改后的内容一旦以任何形式公布在本网站上即生效,并取代此前相关内容,您应不时关注本网站公告、提示信息及协议、规则等相关内容的变动。您知悉并确认,如您不同意更新后的内容,应立即停止使用本网站;如您继续使用本网站,即视为知悉变动内容并同意接受。

二、服务需知
1、本网站运用自身开发的操作系统通过国际互联网络为用户提供购买商品等服务。使用本网站,您必须:
(1)自行配备上网的所需设备,包括个人手机、平板电脑、调制解调器、路由器等;
(2)自行负担个人上网所支付的与此服务有关的电话费用、网络费用等;
(3)选择与所安装终端设备相匹配的软件版本,包括但不限于iOS、Android、iPad、Windows Phone等多个EasyGPA发布的应用版本。

2、基于本网站所提供的网络服务的重要性,您确认并同意:
(1)提供的注册资料真实、准确、完整、合法有效,注册资料如有变动的,应及时更新;
(2)如果您提供的注册资料不合法、不真实、不准确、不详尽的,您需承担因此引起的相应责任及后果,并且EasyGPA保留终止您使用本网站各项服务的权利。

三、订单
1、使用本网站下订单,您应具备购买相关商品的权利能力和行为能力,如果您在18周岁以下,您需要在父母或监护人的监护参与下才能使用本网站。在下订单的同时,即视为您满足上述条件,并对您在订单中提供的所有信息的真实性负责。
2、在您下订单时,请您仔细确认所购商品的名称、价格、数量、收货人等信息。收货人与您本人不一致的,收货人的行为和意思表示视为您的行为和意思表示,您应对收货人的行为及意思表示的法律后果承担连带责任。
3、您理解并同意:本网站上销售商展示的商品和价格等信息仅仅是要约邀请,您下单时须填写您希望购买的商品数量、价款及支付方式。
4、由于市场变化及各种以合理商业努力难以控制因素的影响,本网站无法避免您提交的订单信息中的服务或者商品出现缺货情况;如您下单所购买的服务或者商品发生缺货,您有权取消订单,服务和商品提供者亦有权自行取消订单,若您已经付款,则为您办理退款。

5、因如下情况造成订单延迟等,本网站将无法承担迟延的责任:
(1)客户提供错误信息和不详细的需求;
(2)由于客户失联无法接收服务,由此造成的延误及相关的后果。
(3)不可抗力,例如:自然灾害、交通戒严、突发战争等。

四、用户个人信息保护及授权
1、您知悉并同意,为方便您使用本网站相关服务,本网站将存储您在使用时的必要信息,包括但不限于您的真实姓名、性别、生日、配送地址、联系方式、通讯录、相册、日历、定位信息等。除法律法规规定的情形外,未经您的许可EasyGPA不会向第三方公开、透露您的个人信息。EasyGPA对相关信息采取专业加密存储与传输方式,利用合理措施保障用户个人信息的安全。
2、您知悉并确认,您在注册帐号或使用本网站的过程中,需要提供真实的身份信息,EasyGPA将根据国家法律法规相关要求,进行基于移动电话号码的真实身份信息认证。若您提供的信息不真实、不完整,则无法使用本网站或在使用过程中受到限制,同时,由此产生的不利后果,由您自行承担。
3、您在使用本网站某一特定服务时,该服务可能会另有单独的协议、相关业务规则等(以下统称为“单独协议”),您在使用该项服务前请阅读并同意相关的单独协议;您使用前述特定服务,即视为您已阅读并同意接受相关单独协议。
4、您充分理解并同意:
(1)接收通过邮件、短信、电话等形式,向在本网站注册、购物的用户、收货人发送的订单信息、促销活动等内容;
(2)为配合行政监管机关、司法机关执行工作,在法律规定范围内EasyGPA有权向上述行政、司法机关提供您在使用本网站时所储存的相关信息,包括但不限于您的注册信息等,或使用相关信息进行证据保全,包括但不限于公证、见证等;
(3)EasyGPA依法保障您在使用过程中的知情权和选择权,在您使用本网站服务过程中,涉及您设备自带功能的服务会提前征得您同意,您一经确认,EasyGPA有权开启包括但不限于收集地理位置、读取通讯录、使用摄像头、启用录音等提供服务必要的辅助功能。
(4)EasyGPA有权根据实际情况,在法律规定范围内自行决定单个用户在本网站及服务中数据的最长储存期限以及用户日志的储存期限,并在服务器上为其分配数据最大存储空间等。

五、用户行为规范
1、本协议依据国家相关法律法规规章制定,您同意严格遵守以下义务:
(1)不得传输或发表:煽动抗拒、破坏宪法和法律、行政法规实施的言论,煽动颠覆国家政权,推翻社会主义制度的言论,煽动分裂国家、破坏国家统一的言论,煽动民族仇恨、民族歧视、破坏民族团结的言论;
(2)从中国大陆向境外传输资料信息时必须符合中国有关法规;
(3)不得利用本网站从事洗钱、窃取商业秘密、窃取个人信息等违法犯罪活动;
(4)不得干扰本网站的正常运转,不得侵入本网站及国家计算机信息系统;
(5)不得传输或发表任何违法犯罪的、骚扰性的、中伤他人的、辱骂性的、恐吓性的、伤害性的、庸俗的,淫秽的、不文明的等信息资料;
(6) 不得传输或发表损害国家社会公共利益和涉及国家安全的信息资料或言论;
(7)不得教唆他人从事本条所禁止的行为;
(8)不得利用在本网站注册的账户进行牟利性经营活动;
(9)不得发布任何侵犯他人隐私、个人信息、著作权、商标权等知识产权或合法权利的内容;
2、您须对自己在网上的言论和行为承担法律责任,您若在本网站上散布和传播反动、色情或其它违反国家法律的信息,本网站的系统记录有可能作为您违反法律的证据。

3、除非法律允许或EasyGPA书面许可,您使用本网站过程中不得从事下列行为:
(1)删除本网站及其副本上关于著作权的信息;
(2)对本网站进行反向工程、反向汇编、反向编译,或者以其他方式尝试发现本网站的源代码;
(3)对EasyGPA拥有知识产权的内容进行使用、出租、出借、复制、修改、链接、转载、汇编、发表、出版、建立镜像站点等;
(4)对本网站或者本网站运行过程中释放到任何终端内存中的数据、软件运行过程中客户端与服务器端的交互数据,以及本网站运行所必需的系统数据,进行复制、修改、增加、删除、挂接运行或创作任何衍生作品,形式包括但不限于使用插件、外挂或非经EasyGPA授权的第三方工具/服务接入本网站和相关系统;
(5)通过修改或伪造软件运行中的指令、数据,增加、删减、变动软件的功能或运行效果,或者将用于上述用途的软件、方法进行运营或向公众传播,无论这些行为是否为商业目的;
(6)通过非EasyGPA开发、授权的第三方软件、插件、外挂、系统,登录或使用EasyGPA软件及服务,或制作、发布、传播上述工具;
(7)自行或者授权他人、第三方软件对本网站及其组件、模块、数据进行干扰。

六、违约责任
1、如果EasyGPA发现或收到他人举报投诉您违反本协议约定的,EasyGPA有权不经通知随时对相关内容进行删除、屏蔽,并视行为情节对违规帐号处以包括但不限于警告、限制或禁止使用部分或全部功能、帐号封禁直至注销的处罚,并公告处理结果。
2、EasyGPA有权依据合理判断对违反有关法律法规或本协议规定的行为采取适当的法律行动,并依据法律法规保存有关信息向有关部门报告等,您应独自承担由此而产生的一切法律责任。
3、您理解并同意,因您违反本协议或相关服务条款的规定,导致或产生第三方主张的任何索赔、要求或损失,您应当独立承担责任;EasyGPA因此遭受损失的,您也应当一并赔偿。
4、除非另有明确的书面说明,EasyGPA不对本网站的运营及其包含在本网站上的信息、内容、材料、产品(包括软件)或服务作任何形式的、明示或默示的声明或担保(根据中华人民共和国法律另有规定的以外)。

七、所有权及知识产权
1、您一旦接受本协议,即表明您主动将您在任何时间段在本网站发表的任何形式的信息内容(包括但不限于客户评价、客户咨询、各类话题文章等信息内容)的财产性权利等任何可转让的权利,如著作权财产权(包括并不限于:复制权、发行权、出租权、展览权、表演权、放映权、广播权、信息网络传播权、摄制权、改编权、翻译权、汇编权以及应当由著作权人享有的其他可转让权利),全部独家且不可撤销地转让给EasyGPA所有,并且您同意EasyGPA有权就任何主体侵权而单独提起诉讼。
2、本协议已经构成《中华人民共和国著作权法》第二十五条(条文序号依照2010年修订版《著作权法》确定)及相关法律规定的著作财产权等权利转让书面协议,其效力及于您在EasyGPA软件上发布的任何受著作权法保护的作品内容,无论该等内容形成于本协议订立前还是本协议订立后。
3、您同意并已充分了解本协议的条款,承诺不将已发表于本网站的信息,以任何形式发布或授权其它主体以任何方式使用(包括但不限于在各类网站、媒体上使用)。
4、除法律另有强制性规定外,未经EasyGPA明确的特别书面许可,任何单位或个人不得以任何方式非法地全部或部分复制、转载、引用、链接、抓取或以其他方式使用本网站的信息内容,否则,EasyGPA有权追究其法律责任。
5、本网站所刊登的资料信息(诸如文字、图表、标识、按钮图标、图像、声音文件片段、数字下载、数据编辑和软件),均是EasyGPA或其内容提供者的财产,受中国和国际版权法的保护。本网站上所有内容的汇编是EasyGPA的排他财产,受中国和国际版权法的保护。本网站上所有软件都是EasyGPA或其关联公司或其软件供应商的财产,受中国和国际版权法的保护。

八、法律管辖适用及其他
1、本协议的订立、执行和解释及争议的解决均应适用中国法律。如双方就本协议内容或其执行发生任何争议,双方应尽力友好协商解决;协商不成时,任何一方均可向协议签订地人民法院提起诉讼。本协议签订地为中华人民共和国上海市。
2、如果本协议中任何一条被视为废止、无效或因任何理由不可执行,该条应视为可分的且并不影响任何其余条款的有效性和可执行性。
3、本协议未明示授权的其他权利仍由EasyGPA保留,您在行使这些权利时须另外取得EasyGPA的书面许可。EasyGPA如果未行使前述任何权利,并不构成对该权利的放弃。
4、本协议内容中以加粗、下划线等方式显著标识的条款,请您着重阅读。您点击“同意”按钮即视为您完全接受本协议,在点击之前请您再次确认已知悉并完全理解本协议的全部内容。

Easy GPA User Registration Agreement

  1. Confirmation and acceptance of the terms of service
    1. The ownership and operation rights of the various electronic services of the EasyGPA website (hereinafter referred to as “this website ”) are owned by “EasyGPA ”.The services provided on this website will be strictly implemented in accordance with the service terms and operating rules issued by them. When you confirm all the terms of service and complete the registration process, this agreement is established between you and this website and has legal effect, and you become an official user of this website .
    2. According to the changes in national laws and regulations and the operation needs of this website , EasyGPA has the right to modify the terms and conditions of this agreement from time to time. Once the revised content is published on this website in any form , it will take effect and replace the relevant content. From time to time, we should pay attention to the changes in the announcements, reminders, agreements, rules and other related content of this website . You acknowledge and confirm that if you do not agree to the updated content, you should immediately stop using this website ; if you continue to use this website , you will be deemed to be aware of the changes and agree to accept.

Second, the service needs to know
1. This website uses its own developed operating system to provide users with services such as purchasing goods through the Internet. To use this website , you must:
(1) Self-equipped equipment for Internet access, including personal mobile phones, tablets, modems, routers, etc.;
(2) Self-paying the telephone charges, network fees, etc. related to the service paid by the individual on the Internet;
(3) Select the software version that matches the installed terminal device, including but not limited to iOS, Android, iPad, Windows Phone and other application versions released by EasyGPA .

  1. Based on the importance of the web services provided on this website , you confirm and agree that:
    (1) The registration information provided is true, accurate, complete, legal and valid. If the registration information changes, it should be updated in a timely manner;
    (2) If the registration information you provide is illegal, untrue, inaccurate or incomplete, you shall bear the corresponding responsibilities and consequences arising therefrom , and EasyGPA reserves the right to terminate your use of the services of this website .

Third, the order
1. When placing an order on this website , you should have the right and ability to purchase related products. If you are under 18 years of age, you need to use the website with the parental or guardian’s guardianship . At the time of placing an order, you are deemed to have fulfilled the above conditions and are responsible for the authenticity of all the information you provide in the order.
2. When you place an order, please carefully confirm the name, price, quantity, consignee and other information of the purchased goods. If the consignee is inconsistent with you, the consignee’s actions and meanings are deemed to be your actions and meanings, and you shall be jointly and severally liable for the legal consequences of the consignee’s actions and meanings.
3. You understand and agree that the information on the products and prices displayed by the seller on this website is only an invitation to make an invitation . You must fill in the quantity, price and payment method of the goods you wish to purchase when placing your order.
4. Due to market changes and various factors that are difficult to control by reasonable commercial efforts, this website cannot avoid the out-of-stock situation of theservices or goods in the order information you submitted ; if the goods or goods purchased by you are out of stock You have the right to cancel the order, services and goods providers also have the right to cancel the order on their own, if you have already paid, compared with your refund.

  1. Due to the following circumstances, the order will be delayed, etc., this website will not be able to bear the responsibility of delay :
    (1) The customer provides error information and unspecified requirements ;
    (2) Delays and related consequences caused by the failure of the customer to receive the service .
    (3) Force majeure, such as natural disasters, traffic martial law, sudden wars, etc.

Fourth , user personal information protection and authorization
1. You acknowledge and agree that in order to facilitate the use of the services of this website , this website will store the necessary information for your use, including but not limited to your real name, gender, birthday, delivery address, contact information, address book, Albums, calendars, location information, and more. Except as required by laws and regulations, EasyGPA will not disclose or disclose your personal information to third parties without your permission . EasyGPAadopts professional encryption storage and transmission methods for relevant information, and uses reasonable measures to ensure the security of users’ personal information.
2. You acknowledge and confirm that you need to provide true identity information in the process of registering your account or using this website . EasyGPA will conduct real identity information authentication based on mobile phone number according to the relevant requirements of national laws and regulations. If the information you provide is untrue or incomplete, you may not use this website or be restricted during use, and the adverse consequences arising therefrom shall be borne by you.
3. When you use a particular service on this website , the service may have separate agreements, related business rules, etc. (collectively referred to as “individual agreements”). Please read and agree to the relevant information before using the service. A separate agreement; if you use the specific service described above, you are deemed to have read and agreed to accept the separate agreement.
4. You fully understand and agree:
(1) Receiving order information, promotion activities, etc. sent to users and consignees registered and shopping on this website by mail, SMS, telephone, etc.;
(2) In order to cooperate with the administrative supervision organs and the judicial organs, within the scope of the law, EasyGPA has the right to provide the above-mentioned administrative and judicial authorities with relevant information stored by you when using this website , including but not limited to your registration information. , or use relevant information for evidence preservation, including but not limited to notarization, witness, etc.;
(3) EasyGPA guarantees your right to know and choose during the process of use. In the process of using this website, the service involving the function of your device will get your consent in advance. Once you confirm, EasyGPA has the right to open it. This includes, but is not limited to, the ability to collect geographic locations, read contacts, use cameras, enable recordings, and more.
(4) EasyGPA has the right to determine the maximum storage period of the data of the individual users on the website and services and the storage period of the user logs according to the actual situation , and allocate the maximum storage space for the data on the server. .

  1. User Code of Conduct
    1, this Agreement in accordance with national laws and regulations rulemaking, you agree to strictly abide by the following obligations:
    (1) It is not allowed to transmit or publish: incitement to resist, to undermine the constitution and the implementation of laws and administrative regulations, to incite subversion of state power, to overthrow the socialist system, to incite separatist countries, to undermine national unity, to incite national hatred and ethnic discrimination. Speech that undermines national unity;
    (2) When transmitting data information from mainland China to China, it must comply with relevant Chinese laws and regulations;
    (3) Do not use this website to engage in illegal activities such as money laundering, stealing trade secrets, stealing personal information, etc.;
    (4) shall not interfere with the normal operation of this site, this site may not invade and national computer information systems;
    (5) Do not transmit or publish any illegal, harassing, slanderous, abusive, intimidating, harmful, vulgar, obscene, uncivilized information such as criminals;
    (6) It is not allowed to transmit or publish information or speech that harms the public interest of the state and involves national security;
    (7) Do not insult others to engage in acts prohibited by this section;
    (8) Do not use the account registered on this website for profit-making business activities;
    (9) Do not post any content that infringes the privacy, personal information, copyright, trademark rights and other intellectual property rights or legal rights of others;
    2, you must bear the legal responsibility for their words and actions on the Internet, if your spread and dissemination of reactionary, pornographic or other information in violation of national laws on this site, this site’s system may be recorded as evidence of your violation of the law.
  2. Unless you are permitted by law or with the written permission of EasyGPA , you may not engage in the following acts during the use of this website :
    (1) Delete the copyright information on this website and its copy;
    (2) conducted on this site reverse engineering, disassembling, reverse compile, or otherwise attempt to discover the site’s source code;
    (3) use, rent, lend, copy, modify, link, reproduce, compile, publish, publish, and create mirror sites for the content of EasyGPA ‘s intellectual property;
    (4) Copying, modifying, adding, etc., the data released to the memory of any terminal during the operation of this website or the website , the interaction data between the client and the server during the running of the software, and the system data necessary for the operation of the website . Delete, mount, or create any derivative work, including but not limited to access to the Site and related systems using plug-ins, plug-ins, or third-party tools/services not authorized by EasyGPA ;
    (5) by modifying or forging the instructions and data in the running of the software, adding, deleting, changing the function or operation effect of the software, or operating or transmitting the software or method for the above purposes, whether or not the behavior is Commercial purpose
    (6) Log in or use EasyGPA software and services through third-party software, plug-ins, plug-ins, systems developed and licensed by non- EasyGPA , or create, publish, and distribute the above tools;
    (7) Interfere with the website, its components, modules and data by itself or by authorizing others or third party software .
  3. Liability for breach of contract
    1. If EasyGPA discovers or receives reports from others that you violate this agreement, EasyGPA reserves the right to delete or block the relevant content at any time without notice, and to include, but not limited to, warnings, restrictions or prohibitions on the offending account depending on the behavior. Use some or all of the features, account bans until the cancellation of the penalty, and announce the results.
    2. EasyGPA has the right to take appropriate legal actions based on reasonable judgments for violations of relevant laws and regulations or the provisions of this Agreement, and to report relevant information to relevant departments in accordance with laws and regulations. You shall bear all legal liabilities arising therefrom. .
    3. You understand and agree that you shall be solely responsible for any claims, claims or losses claimed by or in connection with your breach of this Agreement or the relevant Terms of Service; and that EasyGPA shall suffer losses as a result of your failure. Compensation.
    4, unless otherwise expressly written statement, EasyGPA not operate this website and the information contained on this website, content, materials, products (including software), or service of any kind, express or implied representations or warranties (Except as otherwise provided by the laws of the People’s Republic of China).

VII . Ownership and intellectual property rights
1. By accepting this Agreement, you will take the initiative to disclose the property of any form of information (including but not limited to customer evaluation, customer consultation, various topic articles, etc.) published on this website at any time . Any transferable rights such as rights, including copyright rights (including not limited to: reproduction rights, distribution rights, rental rights, exhibition rights, performance rights, screening rights, broadcasting rights, information network communication rights, filming rights, adaptation rights, translations) The rights, the right to assemble, and other transferable rights that should be enjoyed by the copyright owner are all exclusive and irrevocably transferred to EasyGPA , and you agree that EasyGPA has the right to file a separate lawsuit for any subject infringement.
2. This Agreement has constituted a written agreement on the transfer of rights such as Article 25 of the Copyright Law of the People’s Republic of China (the serial number of the Article is determined in accordance with the 2010 Copyright Law) and the copyright property rights of the relevant laws. Any content protected by copyright law published on the EasyGPA software, whether such content is formed prior to the conclusion of this Agreement or after the conclusion of this Agreement.
3. You agree and fully understand the terms of this Agreement and undertake not to publish or authorize other entities to use the information published on this websitein any way (including but not limited to use on various websites and media). .
4. Except as otherwise required by law , no unit or individual may illegally copy, reproduce, quote, link, crawl or otherwise use this website in whole or in partwithout the express written permission of EasyGPA . The information content, otherwise, EasyGPA has the right to pursue its legal responsibility.
5. The information published on this website (such as text, graphics, logos, button icons, images, sound file fragments, digital downloads, data editing and software) isthe property of EasyGPA or its content providers, subject to China and international Protection of copyright law. The compilation of all content on this website is the exclusive property of EasyGPA and is protected by Chinese and international copyright laws. All software on this website is the property of EasyGPA or its affiliates or its software suppliers and is protected by Chinese and international copyright laws.

  1. Legal jurisdiction and other
    1. The conclusion, execution and interpretation of this Agreement and resolution of disputes shall be governed by the laws of the People’s Republic of China. In the event of any dispute between the parties regarding the content of this Agreement or its execution, the parties shall endeavor to resolve the dispute through friendly negotiation; when the negotiation fails, either party may file a lawsuit in the People’s Court where the agreement is signed. The signing of this agreement is Shanghai,People’s Republic of China .
    2. If any of the Agreements is deemed to be revoked, invalid or unenforceable for any reason, the Article shall be deemed to be separable and shall not affect the validity and enforceability of any remaining provisions.
    3. Other rights not expressly authorized by this Agreement are still reserved by EasyGPA , and you must obtain additional written permission from EasyGPA in exercising these rights . EasyGPA does not constitute a waiver of this right if it does not exercise any of the foregoing rights.
    4. The terms of this agreement are marked by bold, underline, etc., please read carefully. By clicking the “Agree” button, you are deemed to have fully accepted this Agreement. Please reconfirm and understand the full content of this Agreement before clicking.

登录
EasyGPA
  • 关于EasyGPA

    EASYGPA为海外留学生提供综合知识文化培训服务,核心团队组建于2009年初,经过7年的发展,是为华人留学生提供学术辅导、职业培训的留学教育知名品牌。英国、澳大利亚、新西兰、加拿大、美国、新加坡、香港等主流英语国家是我们的服务范围。

  • 超广的学科范围

    我们的专家来自科技/商业/管理/人力资源/社会科学等多个学科领域,包括了工程管理/医药/法律/工商管理/社会学/心理学/英语文学等各类学科。

  • 专业的坐阵

    来自全球的上百名教授/专家/博士为你提供最专业的海外留学辅导服务。我们根据您的个性需求定制解决方案,因为专业,所以值得托付。

最新文章
  • 2019英国犯罪地图检索教程(附《2019英国大学周边犯罪排名榜》)
    2019年12月13日
  • 英国办理申根签证大面积被拒!去冰岛是重灾区!
    2019年12月9日
  • 32份金融业紧缺人才指南!请收好!
    2019年12月9日
  • EasyGPA|第37期速报!
    2019年12月7日
联系我们

邮箱:
刘老师: service@easygpa.com
郑老师: zhengdx@easygpa.com
微信客服: EasyGPA01
QQ客服: 3382387378
微信公众号: easygpaschool
电话: UK 117 230 5747
AU (02) 8003 3693
NZ 09 889 4139

扫一扫联系我们
  • 微信客服

  • QQ客服

  • 微信公众号

EasyGPA

© Copyright 2012-2020. EasyGPA All Rights Reserved. 沪ICP备17007016号-1 版权所有:上海恺捷教育科技有限公司