Rubber thing hi tropical rain forest plant-a mi a ni a, boruak, leilung, boruak, humidity leh thilsiam dangte tan a khauh hle. international authority-te chuan a tlangpuiin: "Rubber thing chu tropical area chiang takah a awm thei{{1} equator south emaw 10 degrees north of the region-ah emaw a awm thei a, restricted area." a ni
Khawvela natural rubber siamtu lian ber berte, a tam zawk chu equator-a equator chhim lam℃10-a hlaa awm, tropical rainforest area chhim lam℃15 inkar, Malaysia, Indonesia, Thailand, India, Sri Lanka leh ram dang dangte pawh telna hmun. China, a bakah Xisha, Nansha thliarkar, latitude dang latitude-ah te, a hmun dangah te pawh a awm a, chu chu a ni. A chunga ramte aiin a chhe zawk daih. International expert tam tak chuan China chu " restricted area". tiin an dah thin.
Natural rubber hian comprehensive performance tha tak a nei a, hman a ni nasa hle. a hman thin chu steel, oil leh coal te nen an inzawm khawm a, chu chu tunlai khawtlang nunah industrial material lian pali a ni a, chu chu hnam nunphung atana thil pawimawh tak a ni.
Chumi kum chuan Soviet kaihhruai socialist camp chuan, hmun hrang hranga awm, khapna ang chi, ram engmahin natural rubber a chin theih loh avangin, oil chu raw material atan hman a ngai lo va, synthetic rubber chu a thlaktu atan siam a ngai a ni. synthetic rubber man to tak mai ni lovin, natural rubber siamna, a bik takin aircraft tyre siamnaah chuan raw material atan natural rubber hman a ngai a, chuti lo chuan combat effectiveness a nghawng a ngai a ni.