Akyi dompe a ɛwɔ automated systems a enni ano wɔ wiase nyinaa ne polypropylene PP strap, a ɛda nsow bere a ɛfa mprempren packing a etu mpɔn ho no. Saa ade a wɔde kyekyere nneɛma a wɔde polypropylene resin, a ɛyɛ polymer a ɛma ɔhyew yɛ kɛse yi, .
Sɛ woretɔ nneɛma a wɔde kyekyere nneɛma ma nnwuma a, polyester abɔso no su a wobɛhwɛ no yɛ anammɔn a ɛho hia yiye a ɛwɔ nkɛntɛnso tẽẽ wɔ sɛnea nnesoa no yɛ nea ahobammɔ wom ne sika dodow a wɔbɔ de di adwuma no so. PET polyester abɔso a ɛkorɔn no wɔ ahoɔden a ɛtwetwe a efi kilogram 180 kosi 1360, .