[Introduction] : Me ka hiki ʻana mai o ka koi kuʻuna ma waho o ka wā, nāwaliwali ka mākeke PVC, ʻoi aku ka haʻahaʻa o ka hana holoʻokoʻa o nā ʻoihana PVC ma Shandong, ʻoi aku ka paʻa o ke kūkulu ʻana i nā ʻoihana ethylene, akā ʻo nā ʻoihana calcium carbide waho, ma lalo o ke koina...
Heluhelu hou aku