What Do the Prefixes SVR, STR, SIR, SMR, and SCR Stand For?

Prefix Reference

SVR = Vietnamese Standard Rubber (e.g., SVR 3L, SVR CV60, SVR20); STR = Thai Standard Rubber (e.g., STR20, STR10, STR CV60); SIR = Indonesian Standard Rubber (e.g., SIR20); SMR = Malaysian Standard Rubber (e.g., SMR20, SMR L, SMR CV60); SCR = Chinese Standard Rubber (e.g., SCR WF whole field latex, SCR10); ISNR = Indian Standard Natural Rubber (e.g., ISNR20).

The same suffixes are broadly comparable across national systems, all graded by laboratory parameters. International Standard ISO 2000 provides the TSR specification framework.

Practical Limitations

Customer approval may cover a specific combination of grade, producer, and actual factory, rather than simply 'Vietnamese rubber' or a group brand. When quoting and comparing, the prefix, producer, factory code, and batch evidence should be cross-checked.