The rubber tree, Hevea brasiliensis, is a native of the Amazonian forest. Grown now in parts of Africa and Asia, it is one of the world's most closely studied and carefully tended plants.
Natural rubber is elastic, flexible, airtight, watertight, long lasting and insulating, to mention just a few of its properties. There are thousands of products, which take advantage of these useful properties.
The KLK Group produces rubber latex concentrate and block rubber.
Dry natural rubber graded on the basis of technical parameters is called Technically Specified Rubbers (TSR). The International Standards Organisation ("ISO") first came out with the draft Technical Specifications for Natural Rubber in 1964. Based on these specifications, Malaysia introduced their Standard Malaysian Rubber ("SMR") scheme in 1965. Since then, all natural rubber producing countries started producing and marketing natural rubber as TSR, including Indonesia, the designation being Standard Indonesian Rubber ("SIR").
