Hydrocarbon resin (PCH) is mainly used in the field of high-frequency and high-speed copper clad laminate production. Chinese companies have weak competitiveness.
Hydrocarbon resin, also known as hydrocarbon resin, or PCH for short, refers to a type of thermoplastic resin generated from the C5 and C9 fractions produced by petroleum cracking through pre-treatmen…
A brief analysis of the precautions for using water-reducing agents in high-speed railway construction
In order to improve the workability of concrete, a certain amount of water reducing agent is added during construction. In actual production, water reducing agents are not only used in the constructio…
