Comprehensive Solutions

From custom design to production

With 30 years of experience in silicone rubber heater manufacturing, Grandhold strives to creating rubber heaters that not only meet your product needs but also are of high quality.

To achieve that, Grandhold provides a wide range of design consultations to apply our design knowledge and manufacturing skills in helping improve the shape, special input voltage, power supply, moisture-proof, heat insulation, etc. The consultation brings extraordinary value to the success of your final product - just initiate a free consultation today!

Examples of Custom Product

Examples of product shape shown below, together with Procedure of Design Service and Frequently Asked Questions, illustrate the concept of a customization project.

Product examples under Case Studies tab provide detailed information of application environment and technical results of customization.

Rectangular shape to machine surface with customized openings for power cable connectors and ON/OFF switch.

Portable heating pouch for pre-heating electrical machinery, containing stuffed foam inside a rubber sleeve with a metal hook

Concave, convex and holes tailored based on drawing provided, to tightly cover the curved surface of the object.

Plane heater, attached to the bottom side of lab test platform, to provide a constant testing temperature.

Fish-bone-shape heater, with a round-shape thermostat, covers an elbow of a factory pipeline.

Procedure of Design Service

Frequently Asked Questions