**Author details**

Siti Salina Sarkawi Malaysian Rubber Board, Rubber Technology Centre, RRIM Research Station, Sg Buloh, Selangor, Malaysia

\*Address all correspondence to: ssalina@lgm.gov.my

© 2019 The Author(s). Licensee IntechOpen. This chapter is distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/ by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
