Sɛnea nsɛm a International Rubber Research Organization (IRSG) yii no adi kyerɛ no, wɔhwɛ kwan sɛ wiase nyinaa rɔba a wɔhwehwɛ wɔ afe 2019 mu no bɛkɔ soro bɛyɛ 2.5% wɔ 2018 so, kyerɛ sɛ, efi tɔn ɔpepem 29.3 wɔ 2018 mu kosi bɛyɛ rɔba ɔpepem 30 wɔ 2019. ne nkɔso a ɛba wɔ rɔm mu no, wiase nyinaa nkɔso a enni hɔ wɔ rɔm mu no, ɛnyɛ nea ɛwɔ rɔm mu a wɔde wɔn ho hyɛ mu wɔ 100 mu. sɛ ɛboro tɔn ɔpepem 1.6.
1. Aman 10 a ɛwɔ soro no yɛ 80% wɔ nea wɔhwehwɛ no mu .
Sɛnea rɔba a wobu akontaa sɛ wɔhwehwɛ wɔ wiase nyinaa kyerɛ no, aman 10 a ɛwɔ soro a wɔde rɔba ka ho no yɛ ( sɛnea wɔahyehyɛ no nhyehyɛe): China, United States, India, Japan, Thailand, Brazil, Indonesia, Malaysia, Germany, Russia{1}}
Aman 10 a ɛwɔ soro a wɔhwehwɛ rɔba a wɔde ka ho no yɛ aman a wɔanya nkɔso titiriw wɔ Asia, Amerika ne Europa, a ɛyɛ nea wɔhwehwɛ nyinaa mu 80%, a nea ɛka ho ne China no yɛ nea ɛkame ayɛ sɛ wiase no mu nneɛma a wɔhwehwɛ.
2. aman 10 a ɛwɔ soro a ɛwɔ mfiridwuma mu nnyinaso pa .
Wiase no mu rɔba aboafoɔ adwumayɛbea, downstream rɔba products factories, upstream raw materials factories no titiriw kyekyɛ wɔ China sɛ Asia ne aman a wɔanya nkɔsoɔ ananmusifoɔ, saa mpɔtam yi wɔ mfiridwuma nnyinasoɔ pa, sikasɛm mu nkɔsoɔ, a ɛfata ma kar, taeɛ, rɔba nneɛma, rɔba boafoɔ ne nnwuma foforɔ a wɔyɛ{0}}