铝型材销售订单发票基础信息汇总数据集

1.数据清洗与标准化：对规格型号、备注等空值保留原始空值，将铝材单位统一换算为吨，金额、税额保留2位小数，单价保留6位小数。 2.业务规则与分类：根据税收分类编码及货物名称，划分铝材类型，规格型号字段用于区分细分品类。提取备注中的“项目名称”“工程地址”信息，关联至对应发票，支持工程成本分析。 3.数据输出与可视化：按购方、产品类型、时间段统计交易量、金额及税额，通过开票日期字段分析季度和整年的销售波动。 4.安全与合规：企业识别号和数电票号码展示时要对敏感信息做脱敏处理，后五位替换成“*****”。1. Data Cleaning and Standardization: For null values in fields such as specification/model and remarks, the original null values shall be retained. The unit of aluminum materials shall be uniformly converted to tons. The invoice amount and tax amount shall be retained to 2 decimal places, and the unit price shall be retained to 6 decimal places. 2. Business Rules and Classification: Categorize aluminum materials based on tax classification codes and product names. The specification/model field is utilized to differentiate sub-categories. Extract the information of "project name" and "engineering address" from the remarks field, and associate them with the corresponding invoices to support engineering cost analysis. 3. Data Output and Visualization: Conduct statistics on transaction volume, invoice amount and tax amount based on the purchaser, product type and time period. Analyze quarterly and annual sales fluctuations using the invoice date field. 4. Security and Compliance: Sensitive information including enterprise identification numbers and digital electronic invoice numbers shall be desensitized during display, with the last five digits replaced by "*****".