P-phenylenediamine nhyehyɛe .

Sɛ́ China P-Phenylenediamine nhyehyɛe ayɛfo ne wɔn a wɔde nneɛma ma no, yɛde rɔba nnuru, rɔba a wɔde ka ho ne rɔba nneɛma a wɔasiesie a ɛwɔ bo a ɛkorɔn ne nea eye sen biara. no ma yɛn ho sɛ yɛbɛtɔ yɛn p-phenylenediamine nhyehyɛe a ɛyɛ papa.