求翻译：生产装置每月对成品质量指标控制情况予以检查，并保持检查记录。是什么意思？

Plant quality index monthly control of the finished product be inspected, and maintain inspection records.

Production devices in each month to check the finished product quality indicators, and to maintain control inspection record.

The end product analysis result satisfies the product standard, does not tally controls from the inside the standard request, because but is unable the working condition limit to handle qualified, must allow to pass firmly appraises by the company defective works appraisal leading group, the formula

Production units per month to examine at what the finished product quality control, and maintain inspection records.

Production units per month to examine at what the finished product quality control, and maintain inspection records.