8

year

  • Brief introduction of LED candle

    what is electronic candle ? what is the difference between electronic candle and traditional candle? who needs electronic candles?

  • PARAFFIN WAX

    What is paraffin wax , physical and chemical properties of paraffin wax , classification of paraffin wax , application of
    paraffin wax ,hazards and aid measures of paraffin wax

  • common plastic and the application