审核中国供应商:实用清单

审核中国供应商:实用清单
作者 BQUQ Engineering Team 审核 BQUQ Quality Engineering 2026年5月5日 次阅读 ISO 9001:2015 认证工厂

审核中国供应商:实用清单

简短回答:分四个阶段审核中国供应商——文件、能力证明、商业条款和付费试单。索取营业执照和 ISO9001 证书,要求针对您实际公差的工艺能力报告(而非通用宣传册),确认模具所有权,并在承诺批量前进行 50–200 件的试产。真正的工厂会在 12 个工作小时内回复带有图纸标注的报价。BQUQ 是一家东莞源头工厂,运营 CNC 加工(±0.005 mm)以及冲压、弹簧和散热器,对新买家正是采用这一流程。

大多数采购失败并非因为供应商直接撒谎,而是因为买家以错误的顺序问了错误的问题,然后在八周后第一个集装箱到达时才发现差距。这份清单是我们自己的工程团队如果是买家会使用的顺序——也是我们期望认真客户采用的顺序。

为什么审核顺序比清单本身更重要?

因为每个阶段过滤不同的失败模式,跳过阶段会浪费时间在从未可行的供应商上。

  • 阶段 1 — 合法性。 公司是否合法存在,是否是向您开票的实体?
  • 阶段 2 — 能力。 能否在您的材料、您的批量下保持您的公差?
  • 阶段 3 — 商业条款。 谁拥有模具,谁支付废品费用,图纸变更时怎么办?
  • 阶段 4 — 试单。 现实是否与样品和文件相符?

贸易公司可以通过阶段 1 但失败于阶段 2。真正的工厂可以通过阶段 1 和 2,但仍可能失败于阶段 3,因为没有人写下模具所有权。阶段 4 能捕捉其他所有问题。

阶段 1:在一切之前应验证哪些文件?

从三份文件开始,并相互交叉核对。

文件检查内容危险信号
营业执照统一社会信用代码、注册资本、涵盖您工艺的经营范围、注册地址经营范围仅列出“贸易”或“进出口”
ISO9001 证书证书编号、发证机构、有效期、范围措辞已过期,或范围名称是不同产品类别
工厂地址证明租赁合同、水电费账单或实时视频巡视地址与执照不同,无解释

通过发证认证机构的在线注册表验证 ISO9001 证书编号——而不是供应商通过电子邮件发送的 PDF。PDF 很容易被编辑。

直接询问:“您是制造商还是贸易公司?” 两种答案都可接受,但它们会改变下游的一切。贸易商增加利润,对于小批量多工艺采购可能非常出色;工厂则提供直接的工程接触,通常有更好的模具经济性。您不能容忍的是贸易商声称自己是工厂,因为您将谈判无法实际审核的能力。

视频巡视测试

要求进行实时、未安排的视频通话——而不是录制的工厂参观。让摄像操作员走到特定机器前展示序列号牌,然后转向操作员站和过程检验台。录制的参观是专业制作的,不能证明任何东西。在东莞时间上午 9 点进行实时通话,四分钟内到达运行中的机器,比二十页宣传册告诉您的更多。

阶段 2:如何证明供应商能真正保持您的公差?

发送一张公差在您所需边缘的图纸,并要求讨论工艺能力(Cpk)——而不仅仅是“是的,我们能做。”

对于 CNC 加工,在受控车间中,关键特征可以达到 ±0.005 mm,但并非每个零件的每个特征都能达到。有能力的供应商会告诉您哪些尺寸可以轻松保持,哪些需要二次加工,哪些最好放宽。如果供应商对跨度为 300 mm 的零件说“没问题,所有尺寸都到 ±0.005 mm”,那是在告诉您他们没有阅读图纸。

能力问题弱答案强答案
关键特征公差“是的,我们可以”指出机器、夹具策略和检验方法
材料认证“标准材料”提供带有炉号可追溯性的钢厂证书
首件检验“我们检查每个零件”描述 FAI 报告格式、抽样和量具清单
表面光洁度“质量好”引用 Ra 值和达到该值的精加工工艺
批量爬坡“没问题”说明周期时间、型腔和模具交货时间

对于冲压件,等效问题是关于模具:多少工位、什么吨位,以及模具是为您的年产量还是原型运行设计的。对于弹簧,询问线径公差、卷绕方法,以及应力消除是在线还是批量。对于散热器,询问挤压、铲齿还是压铸——工艺选择驱动成本和热性能。

如果您正在比较可以机加工或冲压的零件的工艺路线,我们的CNC 与冲压供应商选择分析涵盖了成本交叉点。

阶段 3:哪些商业条款决定关系能否持续?

技术能力让您获得良好的第一批货。商业清晰度让您获得良好的第五批。

模具所有权和转移

这是最常见的争议来源。将其写入采购订单:

  • 谁支付模具费用,如果按件计费,摊销计划是什么?
  • 谁拥有实体模具,谁拥有设计文件和电极图纸?
  • 如果您离开,买断价格是多少?
  • 模具将存放在供应商现场还是第三方,谁支付仓储费?

拒绝记录模具所有权的供应商正在告诉您一些事情。在第一次发票之前以书面形式确定。

价格结构透明度

要求对一个代表性零件进行成本分解:材料、加工时间、模具摊销、精加工、检验、包装和利润。您不需要审核每一行——您需要看供应商是否了解自己的成本驱动因素。一个没有结构的单一数字报价无法理性谈判,也无法在您的批量变化时重新报价。

变更控制和废品责任

以书面形式定义:

  • 图纸修订如何定价以及实施需要多长时间
  • 当缺陷是供应商工艺失败还是设计问题时,谁承担废品
  • 返工政策是什么,以及安全相关特征是否允许返工

我们的供应商记分卡指标指南为您提供了生产开始后要跟踪的 KPI——准时交付、PPM 和响应时间是预测其他一切的三个指标。

阶段 4:适当的试单是什么样的?

试单不是样品。样品是手工挑选的。试单是在生产设备上、使用生产夹具进行的生产运行,经过检验和记录。

试单参数典型建议原因
数量50–200 件,或一次完整的模具/压铸模次足够大以揭示工艺漂移
模具生产模具,而非软模具软模具隐藏能力差距
检验全尺寸报告 + 材料证书为您提供未来 PPM 的基准
包装实际生产包装运输中的损坏是真实的失败模式
交货时间报价的交货时间,测量测试计划诚实性,而不仅仅是能力

支付试单费用。提供免费试单的供应商通常会将成本吸收到您未来的单价中,而免费试单如果失败,您没有筹码。

如果试单通过,在大量订单之前下一个小批量订单。如果失败,您损失了几周和适度的模具成本,而不是一条生产线。

对于下游检测缺陷成本高昂的零件,引入第三方。我们的中国第三方检验说明解释了何时成本合理,何时内部 FAI 就足够。

当答案不一致时该怎么办?

将不一致视为信号,而不是单个答案。

  • 执照地址与工厂地址不同 → 要求租赁合同和实时巡视
  • 证书范围与您的工艺不匹配 → 要求实际证书,而非营销表
  • 报价在不到两小时内到达且没有问题 → 供应商没有阅读图纸
  • 报价需要两周 → 供应商没有优先考虑您,也不会优先处理您的加急请求
  • 工程师拒绝技术通话 → 您将在项目生命周期内与销售人员打交道

回答缓慢但准确的供应商通常比立即回答但模糊的供应商是更好的长期合作伙伴。例外是初始报价:具有真正工程能力的车间可以在 12 个工作小时内完成简单的 RFQ,因为估价师和工艺工程师在同一栋楼里。

常见问题

问:我需要亲自参观工厂吗?

答:不是每个供应商都需要,但对于主要供应商,是的——或者派遣可信的第三方。实时视频巡视涵盖了亲自参观所揭示的 70%:机器状况、内务管理、过程检验,以及车间是否真的在运行您的工艺。参观增加的是规模验证和与操作员的非正式对话。在承诺年产量之前预算一次旅行。

问:ISO9001 足以信任中国供应商吗?

答:不。ISO9001 确认存在经过审核的文件化质量体系;它不确认该体系应用于您的零件。向发证机构验证证书编号,然后要求对可比零件进行 Cpk 研究或首件报告。有真实体系的供应商会快速提供这些。墙上挂着证书的供应商会拖延。

问:如何知道我是在与工厂还是贸易公司交谈?

答:在同一条消息中询问营业执照范围、工厂地址和实时视频巡视。贸易公司通常有注册办公地址,经营范围列出贸易或进出口,并会提出“在合作伙伴现场”安排工厂参观。工厂会直接向您展示车间。两者都不一定更好——但您必须知道您从谁那里购买。

问:首次订单的合理 MOQ 是多少?

答:对于 CNC 加工,50–200 件是合理的试单 MOQ,大多数有能力的车间会接受。对于冲压和弹簧,MOQ 由模具驱动,因此实际最低量是一次生产运行。在试单阶段,灵活的 MOQ 是正常的;重要的是供应商在该批量下是否诚实报价,而不是抬高单价来阻止您。

问:报价需要多长时间?

答:对于图纸清晰的简单零件,具有内部估价的工厂可以在 12 个工作小时内完成。复杂的组件、多工艺零件或缺少公差的图纸合法地需要更长时间。如果报价在 30 分钟内到达且没有澄清问题,要怀疑——这通常意味着供应商在猜测,而猜测稍后会以变更单的形式出现。

相关资源

由 BQUQ 工程团队撰写。BQUQ(东莞)在一家 ISO9001 工厂中运营 CNC 加工(±0.005 mm)、金属冲压、定制弹簧和散热器生产。从中国东莞源头直采——12 小时内报价:sc@bquq.com | WhatsApp +86 13713157787 | www.bquq.com



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