Harbour operations
Vehicle positioning & lane control
A deployed vehicle positioning system for a major Indian company at a harbour, tracking and monitoring trucks and controlling their movement through designated lanes.
MARK Sorting Systems

About MARK Sorting Systems
Promech Industries Private Limited brings machinery, sensing and electronic controls together in Coimbatore, India.
Established in 2005, our company designs, develops and manufactures MARK equipment for food processors and industrial applications. Optical colour sorters are part of a wider range that includes rice and dal milling, grading and insect removal, textile machinery and custom projects.
Our work starts with what you process and what you need to separate. From RGB pixel processing and image processing to belt sorting, each platform provides a different starting point for your material.
Colour sortingFood & industrial materials
Rice & dal millingEquipment for your process
Grading & insect removalEquipment for dry food commodities
Textile machinerySensors & electronic controlsCustom projectsBespoke machinery and controls. Discuss your process with MARK.Custom engineering & ODM
Sensing, automation and mechanical systems developed for industrial requirements.
Harbour operations
A deployed vehicle positioning system for a major Indian company at a harbour, tracking and monitoring trucks and controlling their movement through designated lanes.
Coal handling
A robotic arm system deployed to remove external debris from a coal conveyor belt, supporting automated material handling at harbour operations.
Pump controls
A custom cell phone starter project for pump operation. Discuss the pump and required controls with our research and development team.
Explore the pump starter projectFor custom projects and ODM requirements, contact S. Gandhinathan, Research & development.
+91 99943 99001Our mechanical engineering company
Mechanical fabrication, laser cutting and cutting-machine work.
Cendur Mega Fabs supports mechanical jobs and custom fabrication within our wider engineering capabilities. Discuss your drawings, components and production requirements with our team.
Discuss a fabrication requirementCendur Mega Fabs on IndiaMartMachine design starts with the processing requirement. Our background in sensing and electronic controls helps us develop equipment around the material, installation and intended operation.
Checks begin with components and continue through assembly. Each machine is tested against the customer’s requirements before final inspection and dispatch.
Our central service team helps customers find technical information and arrange assistance. Contact MARK with the model and location so we can coordinate support.
Discuss the product, defects to separate and the production requirements.
Components and assemblies are checked through the manufacturing process.
Machine programs and settings are prepared for the agreed application.
Final inspection precedes packing, dispatch and the next installation step.
From mechanical design and electronics to fabrication, assembly and inspection, take a closer look at the people and work behind our machines.























Management team

Director — Research & Development
S. Gandhinathan leads research and development at MARK. His work focuses on developing new technology and improving colour sorters through machine design, sensing and electronic controls.

Director — Marketing
E. Sathis Kumar leads marketing and enquiries at MARK. He focuses on customer relationships, enquiries and bringing MARK’s machinery range to the market.

Director – Administrator
K. Subburaj oversees administration, production and delivery at MARK. He coordinates daily operations, machine building and dispatch, bringing together the people and planning that keep each order moving.

Certification records
Explore the certification documents published by Promech Industries. These are archived records; contact MARK for the current certificate applicable to your enquiry.
Request current documentationOur journey
From our Coimbatore beginnings to the equipment and people behind MARK today.
Promech Industries was established in Coimbatore, bringing together expertise in sensors, electronic controls and machinery.
Trendz marked the move from monochrome sorting to RGB colour sorting.
T20 brought RGB processing across all three colour channels to the sorting process.
COMMANDOR brought intelligent sorting and image capture into the MARK range.
RIGG added size and hole sorting to MARK’s colour-sorting capabilities.
The start of Cendur Mega Fabs extends our engineering capabilities into mechanical fabrication, laser cutting and cutting-machine work.
Ongoing research and new technology continue to improve MARK colour sorters.