Use a product-role map instead of a generic grade list
A buyer searching for polyester resin may find several names that appear similar. The safe way to begin is not to assume that one name is a substitute for another, but to identify what role the resin needs to perform in the product and process.
The published Samrat Poly Resins range separates general FRP laminate options from lamination, mould-surface, casting, fire-performance and chemical-resistance discussions. That separation helps prevent a broad UPR request from becoming an inaccurate product specification.
The standard general-purpose starting point
For general clear FRP work, GP Clear Resin is the published standard clear orthophthalic UPR grade. GP Yellow Resin is the published transparent-yellow general-purpose grade to review where that supplied colour is acceptable in the build-up.
The component, reinforcement, production method and required final appearance still matter. The fact that two products sit within a general polyester-resin conversation does not make their published properties interchangeable.
When the application needs a specialist role
Lamination Resin is published for door, plywood and FRP-bonding applications. GP Gelcoat Resin is published for the mould-facing surface layer. Button Grade Resin is published for buttons and small decorative mouldings. Each answer starts with a different product role, not merely a different product name.
For a stated fire-performance requirement, review Fire Retardant Resin and its product data. For a stated chemical- or corrosion-resistance requirement, review Vinyl Ester Resin and its separate technical data. Do not infer a rating or performance outcome from this overview alone.
A practical selection sequence
First define the component and process. Next state whether the resin is needed for the laminate, a visible surface, bonding, casting or a specialist requirement. Then compare the relevant product TDS, published packaging and quote details.
If the requirement remains unclear, share the facts available rather than guessing a grade: component, process, expected quantity, delivery location and any required finish or specification. This makes a focused technical and commercial discussion possible.