求教 Natural pitch 翻译成什么好？

我所指的 Natural pitch 包含以下产品： Pitch, cork Pitch, natural, for coatings Pitch, natural, caulking Pitch, natural, shoemaking Pitch, natural, grafting Pitch, natural, for electrodes Pitch, natural, for foundries Pitch emulsions Pitch, linseed Pitch, stearic Pitch, caulking Pitch, tall oil Pitch, natural, NES 谢谢指教！