I ka hoʻohālikelike maʻamau o ka honua, pili ka zinc metala i ka mālama ʻana a me ka uhi ʻana, ka hoʻāʻo ʻana i nā mea metala, nā metala non-ferrous, nā ʻāpana pipeline a me nā pipelines, kemika inorganic, nā huahana kemika, ka ʻino metala, ka mining metala, nā huahana kila, nā huahana textile, ins...
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