SOP Quality Control
Why SOP Matters After Deposit
A custom sigma mixer is not a stock machine waiting on the shelf. After production starts, buyers need more than a delivery promise. They need to know whether the frame, mixing chamber, drive system, electrical control and testing work are moving forward according to the agreed project path.
What HengMing Tracks During Production
HengMing follows the production schedule and records key project stages with photos, videos and progress updates. These records may include material preparation, machining progress, welding, assembly, key component checks, electrical work, test-run preparation and internal inspection before PDI.
How Updates Help Overseas Buyers
Overseas buyers cannot stand beside the machine every week, but they can still review real production evidence. SOP updates help buyers follow the project remotely, ask questions earlier and reduce the risk of discovering avoidable issues only when the machine is already finished.
Before PDI Starts
Before formal inspection begins, HengMing reviews the machine internally and prepares the test run based on the agreed project requirements. This step helps turn production tracking into a cleaner handover for the final PDI stage.