Another product: OPP bag is stretchable polypropylene, which belongs to a kind of plastic. Actually, it's a plastic bag. Its characteristics are: easy to burn, flame situation: melting and dripping, yellow on the top and blue on the bottom, less smoke after leaving the fire, continue to burn.
Computer article: OPP power (peak power) OPP: Universal Bluetooth protocol supports data exchange between servers and agents. We usually use the Bluetooth function of the mobile phone to send an MP3, a picture and the like, which can be called OPP transmission. This is just one of the Bluetooth protocols, others are HFP, HSP, DUN and so on.