ʻO ka ʻoihana sealing kahi ʻoihana kumu nui i hoʻohana nui ʻia ma nā ʻano ʻoihana like ʻole, e like me ka petrochemical, nā mea hana lanahu, nā mīkini ʻenekinia, metallurgy, pharmaceuticals, food, textiles, automobiles, home appliances, etc.
Heluhelu hou aku