Nneɛma nketenkete a Wɔde Yɛ Nneɛma

Yɛnim no yie-sɛ yɛyɛ wɔn a wɔyɛ particulate catalyst a wɔyɛ ne wɔn a wɔde ma wɔ China no mu baako. Bɛboro mfe 15 osuahu, yɛde anigye ma wo akwaaba sɛ tɔ a ɛkorɔn particulate catalyst a wɔayɛ wɔ China ha fi yɛn adwumayɛbea. Wɔma nneɛma a wɔkra a wɔahyɛ da ayɛ no akwaaba.

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