HONGFA / Engineering service requests
Engineering service requests
An engineering review works best when the symptom, component history and requested outcome are visible together. Choose the review route that matches the job and prepare the evidence that moves it forward.

New component or assembly development
Bring the application, compound, machine and drawing into one record. Define what is fixed and what may change. Identify dimensional and inspection priorities before turning a process goal into a component specification.
Repair and refurbishment assessment
Record the part identity, measured condition, wear locations and any known repair history. Photos support the assessment; they do not establish repairability. The actual component and a defined inspection scope govern the decision.

Black specks, burning or unstable output
Log the timing, material changes, operating context and cleaning or inspection history. Describe the observation without assuming a cause. Any physical inspection or adjustment belongs to the machine owner’s approved maintenance procedure.
Extrusion-line support scope
Separate the component review from machine settings, installation and on-site work. Record who owns each interface and which evidence can be shared. Any service scope, location and responsibility must be agreed for the actual project.
Screw rust-removal services
Rust-removal projects for injection, extrusion and twin screws, with a defined scope for refurbishment preparation, planned shutdowns and batch maintenance.
Screw rust-removal servicesProject downloads
A better brief.
A clearer next step.
Organize the machine, material, drawings and open questions before a technical discussion.