管理者范文网 > 安全管理 > 岗位职责 > 岗位职责范文
栏目

物料计划岗位职责18篇

更新时间:2024-11-20

物料计划岗位职责

岗位职责是什么

物料计划岗位是企业供应链管理中的关键环节,主要负责协调生产与采购活动,确保物料供应的及时性和准确性,以满足企业生产和销售的需求。

岗位职责要求

1. 具备扎实的物料管理知识,了解物料分类、库存控制和采购流程。

2. 熟练掌握erp系统和其他供应链管理软件。

3. 良好的数据分析能力,能准确预测物料需求。

4. 强烈的责任心和时间管理能力,能在紧张的工作环境中保持高效。

5. 拥有优秀的沟通技巧,能有效协调各部门间的合作。

岗位职责描述

物料计划专员需密切关注市场动态,根据销售预测和生产计划,制定详尽的物料采购和使用计划。他们需要定期评估库存水平,防止过度库存或缺货情况发生,确保生产流程的顺畅进行。此外,他们还需与供应商建立稳定的合作关系,确保物料质量与交期的可靠性。

有哪些内容

1. 制定与维护物料需求计划:基于销售预测、生产计划和现有库存,制定短期和长期的物料采购计划。

2. 监控库存:实时跟踪物料库存,识别潜在的供需不平衡,及时调整采购策略。

3. 协调采购与生产:与采购部门、生产部门紧密合作,确保物料按时到位,满足生产需求。

4. 分析与报告:定期分析物料使用数据,提供改善建议,减少浪费,提高效率。

5. 供应商管理:建立并维护供应商数据库,评估供应商绩效,处理物料质量问题。

6. 应急处理:面对突发情况如物料短缺或延迟,迅速制定应对措施,降低对企业运营的影响。

7. 成本控制:通过优化采购策略,降低物料成本,提高企业的盈利能力。

物料计划岗位是企业供应链的“心脏”,它连接着生产、采购和销售,确保物料流动的精准与高效,为企业的成功运营提供有力保障。

物料计划岗位职责范文

第1篇 物料计划岗位职责

物料计划 岗位职责:

release purchase order to supplier according erp information

follow up the delivery, provide material readiness date to production planning

provide parts forecast to suppliers and cooperate with supplier for any demand change timely

open po tracking/clear-up, push supplier release invoice

coordinate with supplier for any issue impact otd

inventory control

coordinate with other functions to deal with the problems of materials (i.e. quality, quantity, invoice, etc.)

deal with e_cess and obsolete material

coordinate with other functions to make smoothly er

negotiate consignment/vmi

任职资格:

education:

bachelor degree in international trade/logistics or related

e_periences:

minimum 3 years working e_perience on material planning in industry

specific knowledge:

1. understand erp principle and ever used erp system, like qad, oracle, sap system

2. knowledge of forecasting/demand management

3. knowledge of inventory control and management

4. knowledge of logistic for both import and e_port business

5. knowledge of international trade and china customs practice

6. knowledge of vmi management & wms

7. aware of value stream mapping/ value package introduce

岗位职责:

release purchase order to supplier according erp information

follow up the delivery, provide material readiness date to production planning

provide parts forecast to suppliers and cooperate with supplier for any demand change timely

open po tracking/clear-up, push supplier release invoice

coordinate with supplier for any issue impact otd

inventory control

coordinate with other functions to deal with the problems of materials (i.e. quality, quantity, invoice, etc.)

deal with e_cess and obsolete material

coordinate with other functions to make smoothly er

negotiate consignment/vmi

任职资格:

education:

bachelor degree in international trade/logistics or related

e_periences:

minimum 3 years working e_perience on material planning in industry

specific knowledge:

1. understand erp principle and ever used erp system, like qad, oracle, sap system

2. knowledge of forecasting/demand management

3. knowledge of inventory control and management

4. knowledge of logistic for both import and e_port business

5. knowledge of international trade and china customs practice

6. knowledge of vmi management & wms

7. aware of value stream mapping/ value package introduce

第2篇 物料计划管理岗位职责

生产计划/物料管理(pmc) 安徽酷哇机器人有限公司 安徽酷哇机器人有限公司,cowarobot,酷哇机器人,酷哇 岗位职责:

1、根据市场滚动预测及销售订单,编制、审核月度备料计划及mps主生产计划,每日更新并发布主计划;

2、下达车间生产任务及投料单,负责跟进处理生产异常,组织、协调和落实生产计划;

3、根据市场紧急需求、物料情况及时合理的调整生产计划,保证产品市场交付,对于可能出现的异常及时反馈;

4、根据主生产计划编制物料计划,指导采购物料订单下达及交货计划更新,负责审核物料请购;

5、根据物料计划缺料进度,定期组织物料齐套工作,追踪物料到货;

6、合理控制成品、半成品周转库存;

7、上级交办的其它相关事务。

任职资格:

1、统招本科及以上学历,3年以上pmc相关工作经验,熟练使用e_cel办公软件,熟悉mps、mrp和erp系统,对数据敏感,有较好的数据分析整合能力;

2、吃苦耐劳,做事认真负责,思路清晰,具团队精神,具备一定的沟通协调能力;

3、熟悉计划管理、物料管控和生产流程等相关工作。

第3篇 物料计划员岗位职责任职要求

物料计划员岗位职责

职责描述:

1、根据主生产计划制定物料需求计划,并对物料计划的执行情况进化监督和控制 ;

2、对缺料进行有效跟踪,确保生产计划按时完成;

3、负责超计划用料的初审,并向上级提供相关分析报告;

4、负责物料实际耗用情况的统计与分析,查找原因并制定解决办法;

5、监控库存水平,保证一定的存货周转率;

6、负责物料供应的批次安排以及仓库存量的控制 ;

7、负责各种物料安排,统计分析资料及文件的存档管理;

8、完成领导安排的其他工作。

任职要求:

1、有机械制造行业工作背景;

2、3年以上物料计划员工作经历;

3、有erp系统(sap或金蝶或其他软件操作经验);

4、有较强的沟通能力及逻辑思维能力;

5、e_cel表格制作运用熟练。

物料计划员岗位

第4篇 物料计划mc岗位职责

物料计划员mc 宁波比依电器有限公司 宁波比依电器有限公司,比依 工作职责:

1、在合理的成本下,准确准时制定合理的生产计划,物料计划并组织实施;

2、 进行生产分析及改善,提高生产效率;进行物料分析及改善,提高物料周转率;

3、 进行库存结构、库存量的策划与实施,减少呆料,提高生产支持能力。

有经验者直接可来面试。

第5篇 物料计划员岗位职责

物料计划员 常熟安通林 常熟安通林汽车饰件有限公司,常熟安通林,安通林 职责描述:

1、负责发运计划的制定、更新、报批、发布、监控;

2、负责协助生产计划制定及根据生产计划制定物料采购计划报批;

3、负责物料采购订单及时释放及需求预测的定期更新、发布;

4、负责监控并督促供应商按时按量供货,同时按流程与其他部门及时沟通物料信息

5、负责供应商交付账目核对、反馈及交付业绩考评;

6、负责控制物料库存,避免过剩积压,影响业务波动和现金流转;

7、负责顾客需求信息的接受、释放及交付过程跟踪与确认;

8、负责处理产品交付过程发生的问题;

9、负责qad系统管理材料、成品订单;

岗位要求:

1、1年以上物料计划相关工作经验,熟练使用erp、qad、sap等软件;

2、工作认真细致,积极进取,数字观念强,成本意识佳;

3、责任心强,有较强的沟通能力,良好的领悟能力;

4、有报关经验优先考虑。

第6篇 物料计划工程师岗位职责

物料计划工程师 1. 对生产控制进行操作管理和业务指导;

2. 提出生产进度控制方法,制定及检查生产计划,维护主生产计划运行;

3. 控制成品库存,保证发货;

4. 物料、零件需求计划跟进检查执行情况;

5. 检查物料的提前期和库存量标准;

6. 对生产现场的物料进行控制,定期检查物料库存状态,组织缺件控制和生产进度控制活动;

7. 跟踪组织生产转移物料的安全库存准备,及系统参数设置及切换

职责范围

生产进度控制,同时包括组织零件的小批试装、返修。

学历及工作经历要求

1. 学历:工科或管理专业本科以上学历

2. 工作经历:从事相关领域的工作3年以上

3. 语言能力:较强的英语阅读能力,能够用英语与国外子公司进行业务交流。

4. pc操作能力:熟练运用office软件和fs,并能进行简单数据库编程。

1. 对生产控制进行操作管理和业务指导;

2. 提出生产进度控制方法,制定及检查生产计划,维护主生产计划运行;

3. 控制成品库存,保证发货;

4. 物料、零件需求计划跟进检查执行情况;

5. 检查物料的提前期和库存量标准;

6. 对生产现场的物料进行控制,定期检查物料库存状态,组织缺件控制和生产进度控制活动;

7. 跟踪组织生产转移物料的安全库存准备,及系统参数设置及切换

职责范围

生产进度控制,同时包括组织零件的小批试装、返修。

学历及工作经历要求

1. 学历:工科或管理专业本科以上学历

2. 工作经历:从事相关领域的工作3年以上

3. 语言能力:较强的英语阅读能力,能够用英语与国外子公司进行业务交流。

4. pc操作能力:熟练运用office软件和fs,并能进行简单数据库编程。

第7篇 物料计划经理岗位职责

生产物料计划经理 长城开发 深圳长城开发科技股份有限公司,深科技,长城开发 职责描述:

① lead production planners to schedule the production based on the customers requirement and full understanding for the production capacity and capability

② coordinate with related department to solve the impediments occurred during production, in order to avoid any delay for customer‘s demand

③ inventory management, optimize planning, material request work follow and process to reduce rm, wip and fg inventory

④ well arrange the whole production and drive production team to fulfill.

⑤ lead the team on daily planning and material cost control as well as continue

improvement and pursuit lean production.

任职要求:

1、大学本科及以上学历,电子/机械或管理类相关专业毕业;

2、6年以上电子制造企业pmc从业经验,熟练使用sap;

3、英语听说读写熟练;

4、富有开拓意识,注意细节,有很好的压力承受能力以及团队协作精神。

第8篇 物料计划员岗位职责职位要求

职责描述:

replenishment planning and source planning while maintaining desired sto and ito.

® monitor and follow-up work orders to suppliers and repair centers.

® interface to repair center for day to day issue and escalation to vdm for structural issues, e.g. capacity, quality.

® trigger process/tools improvements to solution support.

® identify cost savings and service improvement opportunities.

® spms stock dimension, based on the global dimension tools.

® planning system min level or target stock level decision.

® spms stock point inventory control.

® review and re-dimension the tsl for the spms stocks to secure the fulfillment due to customer demand change.

® life cycle event dimension.

® to take up additional special assignments as and when necessary.

任职资格:

minimum qualifications & e_perience requirements:

® telecom engineering, computer science, or mathematical theory and applied probability educational background and relevant material planning working e_perience

preferred qualifications & e_perience requirements:

® analytical, meticulous and possessing a strong commitment to e_cellence

® independent, self-motivated, enthusiasm and well organized with analytical mind

® high degree of ownership and initiative, attention to detail, and the discipline to follow through on assigned tasks

® good communication and influential skills; be able to deal with all levels of people.

® good inter personal relationship

® pleasant, co-operative, self-motivated, team player

岗位要求:

学历要求:不限

语言要求:不限

年龄要求:不限

工作年限:无工作经验

第9篇 物料计划主管岗位职责

物料计划主管 1.通过顾客订单接收管理 、发运计划制定督导并实施、采购计划/发运计划的制定、订单跟催、信息维护等实现其核心职能。

2.掌握供应链管理理论知识并能够在实际工作中运用。

3.熟练使用sap系统。

4.熟悉生产系统产品制造工艺流程,并能够根据任务独立完成物料计划采购作业。

5.对在物料采购的遇到的问题具有独到的、深入的见解,并能够提出有效的改进意见。

6.工作认真细致,积极进取,数字观念强,成本意识佳,责任心强,有较强的沟通能力。

7.英语可以正常沟通。 1.通过顾客订单接收管理 、发运计划制定督导并实施、采购计划/发运计划的制定、订单跟催、信息维护等实现其核心职能。

2.掌握供应链管理理论知识并能够在实际工作中运用。

3.熟练使用sap系统。

4.熟悉生产系统产品制造工艺流程,并能够根据任务独立完成物料计划采购作业。

5.对在物料采购的遇到的问题具有独到的、深入的见解,并能够提出有效的改进意见。

6.工作认真细致,积极进取,数字观念强,成本意识佳,责任心强,有较强的沟通能力。

7.英语可以正常沟通。

第10篇 物料计划专员岗位职责

物料计划控制专员 广东百朗新风系统有限公司 广东百朗新风系统有限公司,百朗新风 job description:

• 负责分析生产物料需求和制订物料计划,协调采购部门确保供应商物料按时按量满足生产需要。

• 进行生产分析及改善、库存结构、库存量的策划与实施,提高生产支持能力及生产效率

• 进行物料分析及改善,提高物料周转率和控制库存,负责对呆滞物料的处理和各种替代物料的使用。

• 负责组织生产订单的评审和生产物料需求分析

• 负责不良物料退换货处理及相应补料处理

• 协助生产计划的编排和跟踪生产计划完成情况

• 其他上级安排的工作。

what we will looking for in you :

• 大专及以上学历,熟练操作office软件,熟悉erp系统,对供应链的采购周期比较熟悉。

• 5年以上pmc工作经验,具有成本控制意识。

• 英语阅读和书写能力

• 具有良好的沟通、组织与协调能力,富有团队精神

• 较好的分析能力,工作仔细认真,有责任心

第11篇 生产物料计划员岗位职责

生产物料计划员 review customer requirement to fulfill committed customer demand by 100%.

communicate with customer to get firm order & forecast

put customer demand into erp system, after running system, work out purchasing &production requests,release production plan and material order base on customer demand.

manage and review pc&l kpi according to released business plan

working with section manager for associate development and improve associates’ business e_cellence in logistic area

manage and review procurement delivery schedule and production plans and their implementation

manage and review procurement delivery schedule and production plans and their implementation

offer logistics support to new project as team member.

regular report to section manager of business development .

working with purchasing to improve the delivery performance of suppliers

working with other departments to guarantee the successful launch of new projects.

working with it for erp smoothly run in pc&l

working with other departments for business planning and implementation

review customer requirement to fulfill committed customer demand by 100%.

communicate with customer to get firm order & forecast

put customer demand into erp system, after running system, work out purchasing &production requests,release production plan and material order base on customer demand.

manage and review pc&l kpi according to released business plan

working with section manager for associate development and improve associates’ business e_cellence in logistic area

manage and review procurement delivery schedule and production plans and their implementation

manage and review procurement delivery schedule and production plans and their implementation

offer logistics support to new project as team member.

regular report to section manager of business development .

working with purchasing to improve the delivery performance of suppliers

working with other departments to guarantee the successful launch of new projects.

working with it for erp smoothly run in pc&l

working with other departments for business planning and implementation

第12篇 高级物料计划员岗位职责任职要求

高级物料计划员岗位职责

master planner/erp development 高级生产/物料计划员 东莞泰嵩不织布有限公司 东莞泰嵩不织布有限公司,泰嵩不织布 master planner & erp development

location: dongguan, china

line manager: factory manager

job outline

responsibility for the smooth and effective daily & weekly planning of our manufacturing facility to meet its own and te_on group goals. to implement and deliver the dongguan non-woven production master plan.

to manage wip and plant capacities against baan standards.

manage the allocation and usage of raw materials. control warehouse stocks and raw material movements throughout the factory.

liaise with purchasing for on time delivery and the re ordering of raw materials

provide information to traffic control for the allocation of finished goods.

support ‘supply framework’ agreements. control and deliver stock level targets against sales forecast and company targets

‘go to’ person to interface with customer care. to monitor and advise on delivery dates, lead-times, stock flow and order e_ecution.

become the local operational baan/erp e_pert; align shopfloor workflows with appropriate system records. implement sops and develop competencies across the ops team.

responsibilities

• utilise plant capacities for ma_imum efficiency

• plan, create, and control production orders and place onto erp system

• implement weekly production plan and indicate factory recoveries/resources

• implement 24 hour recovery estimate/daily forecast (through daily meeting)

• manage work in progress

• control bills of material (completeness, accuracy, substitutions)

• control inventory movement

• control inventory usage. report on variances to bom/standards and recommend adjustments

• responsibility for stock counts processing data. variance reporting and initiating investigations.

• back flush booked inventory and repair stock (shop floor reporting)

• control and plan felt for weekly plan

• interface with customer care, communicating output, timings, difficulties and actions

• report on overdue orders, and other factory issues which affect customer service level metrics

qualifications & e_perience

- 3-5 years’ e_perience of planning and utilisation of erp systems within a manufacturing factory environment

- university degree, preferably in business administration related topic or it

- it literate in use of microsoft office and enterprise erp systems. have the ability to create reports as required

- must be able to communicate effectively in english & chinese – both orally and written

- relevant e_perience gained within 24/7 manufacturing operations

key competencies

- detail orientated, applying analytical and evidence based approach leading to good and clear decision making

- resourceful, and able to manage concurrent activities

- knowledge and implementation of inventory management tools

- has the ability to clearly communicate, across, up and down the organisation in china and e_ternally with applicable customer service functions in country.

高级物料计划员岗位

第13篇 物料计划员(外资企业)岗位职责职位要求

职责描述:

purpose of the position

to secure the right material at the right time in the right place. use relevant planning tools and systems, e_ecute appropriate process, manage repair centers and control stock movements, so as to secure the availability of material for hws gsc(hardware services global support center) contract fulfillment towards customers, with adequate inventory at a reasonable cost.

role and responsibilities

achieve the purpose of this position, assuming the following roles and responsibilities:

· regular material planning:

forecast the demand trend, provide repair and new buy forecast to repair centers and hws gsc purchaser respectively

material request planning (mrp), based on the monthly forecast mode, present demand trend, stock status and personal planning e_perience

generate repair orders and new buy requests based on mrp, trace the orders to return as scheduled, identify and ask for priority

issue material availability report internally to present stock status and solution, take actions accordingly

· repair center monitoring and management:

interface to repair center for any issue coordination and resolution

repair order handling to make sure repaired units to be returned within scheduled time

repair center performance measurement based on global standard, and corrective improvement plan follow up

repair center master table maintenance

repair center payment request handling

· process and tools:

work effectively by implementing the process and fully utilizing the planning tools and information sources

qualifications

· university or equivalent in business, supply chain or engineering, math

· minimum of 2 years’ working e_perience in supply chain, production planning or material planning in the multinational company

· good command of written and oral english

· skillful use of ms e_cel/access

· e_perience of using mrpii system is an advantage

· good communication skill and teamwork player, with data analysis capacity and strong sense of logic

· good task prioritization skills

上班地点在萝岗科学城,上下班有公司班车接送到各区,上班时间5天8小时,双休

岗位要求:

学历要求:大专

语言要求:不限

年龄要求:不限

工作年限:不限

第14篇 高级物料计划员岗位职责

master planner/erp development 高级生产/物料计划员 东莞泰嵩不织布有限公司 东莞泰嵩不织布有限公司,泰嵩不织布 master planner & erp development

location: dongguan, china

line manager: factory manager

job outline

responsibility for the smooth and effective daily & weekly planning of our manufacturing facility to meet its own and te_on group goals. to implement and deliver the dongguan non-woven production master plan.

to manage wip and plant capacities against baan standards.

manage the allocation and usage of raw materials. control warehouse stocks and raw material movements throughout the factory.

liaise with purchasing for on time delivery and the re ordering of raw materials

provide information to traffic control for the allocation of finished goods.

support ‘supply framework’ agreements. control and deliver stock level targets against sales forecast and company targets

‘go to’ person to interface with customer care. to monitor and advise on delivery dates, lead-times, stock flow and order e_ecution.

become the local operational baan/erp e_pert; align shopfloor workflows with appropriate system records. implement sops and develop competencies across the ops team.

responsibilities

• utilise plant capacities for ma_imum efficiency

• plan, create, and control production orders and place onto erp system

• implement weekly production plan and indicate factory recoveries/resources

• implement 24 hour recovery estimate/daily forecast (through daily meeting)

• manage work in progress

• control bills of material (completeness, accuracy, substitutions)

• control inventory movement

• control inventory usage. report on variances to bom/standards and recommend adjustments

• responsibility for stock counts processing data. variance reporting and initiating investigations.

• back flush booked inventory and repair stock (shop floor reporting)

• control and plan felt for weekly plan

• interface with customer care, communicating output, timings, difficulties and actions

• report on overdue orders, and other factory issues which affect customer service level metrics

qualifications & e_perience

- 3-5 years’ e_perience of planning and utilisation of erp systems within a manufacturing factory environment

- university degree, preferably in business administration related topic or it

- it literate in use of microsoft office and enterprise erp systems. have the ability to create reports as required

- must be able to communicate effectively in english & chinese – both orally and written

- relevant e_perience gained within 24/7 manufacturing operations

key competencies

- detail orientated, applying analytical and evidence based approach leading to good and clear decision making

- resourceful, and able to manage concurrent activities

- knowledge and implementation of inventory management tools

- has the ability to clearly communicate, across, up and down the organisation in china and e_ternally with applicable customer service functions in country.

第15篇 生产物料计划员岗位职责任职要求

生产物料计划员岗位职责

岗位职责:

•与相关部门紧密合作,预测未来的订单状态,确保足够的生产能力,物料供应和控制物料库存, 达到目标

•与所分配业务部门的生产线主管一起审核日常生产状况

•负责与零部件和服务事业部和供应链服务团队的日常材料检查

•协助主管监控生产及物料计划, 物料订单发放情况

岗位要求:

•大专或以上学历

•1年以上制造企业pmc相关工作经验

•熟悉oracle-erp 系统者优先

•积极向上,认真负责

生产物料计划员岗位

第16篇 物料计划主管岗位职责任职要求

物料计划主管岗位职责

职责描述:

1、制定并不断优化部门各业务工作流程。

2、负责部门员工绩效考核并帮助员工改进、提升。

3、指导、监督本组员工工作,保障工作目标的实现。

4、根据月度排产计划需求完成n+3的物料采购申请核对,审批。

5、定期了解原辅材料库存情况,以及和产和销售情况;适时提出或修改下期采购计划,避免进料积压或进料短缺的现象。

6、物料到位跟踪及成本把控;

7、处理上级领导交办其它事务。

任职要求:

1.大专以上学历生产管理相关专业;

2.对于erp系统和供应链管理有一定的了解;

3.物料或供应链相关专业背景或3年以上相关工作经验,特别是化妆品行业;

4.熟悉物料采购作业流程、5s管理能熟练使用办公软件和erp系统,尤其是e_cel和金蝶系统。

物料计划主管岗位

第17篇 出口物料计划员岗位职责职位要求

职责描述:

1. schedule demand requirements and supply capability into a feasible supply plan. works with manufacturing to create realistic reliability goal, supply plan & inventory plans

将订单需求和供应能力转化为可见的供应计划。与生产部门一起设定可行的实现目标、供应计划和存货计划。

2. schedule, review and release purchase orders, follow up closely with overseas supplier on po e_ecution and progress, identify issues with corrective actions to minimize the impacts.

确定时间表安排、审核和下达采购计划,就po执行和进度与供应商紧密联系,采取正确措施辨别问题并将影响最小化。

3. works with overseas suppliers to reduce lead-times and improve on-time delivery.

与国外供应商一起工作减少订货至发货的时间,并改善及时发运。

4. communicate requirements and potential schedule changes to overseas supply chain.

就海外的供应链提出沟通要求和潜在的时间表安排变革。

5. maintain sap system related to material planning & procurement, and ensure the data accuracy.

维护sap系统中的材料计划和采购,保证数据的准确。

6. check and ensure the match of invoice/goods receipt/p/o.

审核并确保发票、收货单、采购订单的一致。

7. develops projections of supply in support of longer term capacity, inventory, and sales planning

通过供应能力的提高来支持长远发展能力、库存管理和销售规划。

8. monitors physical inventory levels and works with manufacturing to manage to target

监控实际的存货水平, 与生产部门一起管理已达成目标。

9. any other duties may be directed.

其它交办的事情。

岗位要求:

学历要求:本科

语言要求:不限

年龄要求:不限

工作年限:2年经验

第18篇 物料计划mc岗位职责任职要求

物料计划mc岗位职责

工作职责:

1、在合理的成本下,准确准时制定合理的生产计划,物料计划并组织实施;

2、 进行生产分析及改善,提高生产效率;进行物料分析及改善,提高物料周转率;

3、 进行库存结构、库存量的策划与实施,减少呆料,提高生产支持能力。

有经验者直接可来面试。

物料计划mc岗位

《物料计划岗位职责18篇.doc》
将本文的Word文档下载,方便收藏和打印
推荐度:
点击下载文档

相关专题

相关范文

分类查询入口

一键复制