ʻIke ʻia i ka makahiki 2004, ʻo Guanghan N&D Carbide Co Ltd kekahi o nā mea hana wikiwiki a alakaʻi i Kina e hana kūikawā me ka tungsten carbide cemented. Hoʻomaʻamaʻa mākou i ka hana ʻana i kahi ʻāpana ākea o ka ʻaʻahu no ka ʻaila ʻaila & gas, ka mana kahe a me ka ʻoihana ʻoki.

ʻO nā mea hana o kēia wā, nā limahana hoʻoikaika nui, a me nā ʻoihana hana kūʻokoʻa e hopena i nā kumukūʻai haʻahaʻa a me nā manawa alakaʻi pōkole e hiki ai iā ND ke hāʻawi i kāna mau mea kūʻai aku i ka lawelawe a me ka waiwai.