Petroleum jelly or petrolatum was discovered as a paraffin-like material coating oil rigs. Since then, it has been used in various ointments and as a lubricant. Here is a look at what petroleum jelly is and its chemical composition.
date_rangeJul 06' 2018 / China
date_rangeJun 02' 2018 / Russia
date_rangeMay 28' 2018 / Russia
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