FRP, which can stand shoulder to shoulder with steel, China is the world's largest market

In a tree-lined valley surrounded by mountains, an experiment is taking place. The people behind the bunker 200 meters away were all staring at an oxygen bottle placed in the center of the valley. The air compressor rotates rhythmically, continuously inflating the fiberglass-coated oxygen cylinder through the alloy steel pipe. The pointer on the pressure gauge affects everyone's heart. The reading gradually increased from 100-200-400-500, until at 700 kilograms and 1 square centimeter, there was only a loud noise and the oxygen cylinder exploded! People around jumped up and cheered: "Success!"
An oxygen cylinder is a high-pressure-resistant container. The working pressure it endures is 150 kg/cm2. In order to be safe in use, it is required to withstand three times the working pressure during manufacture, that is, 450 kg/cm2. Only if it doesn't burst will it be considered qualified. The oxygen cylinder tested above far exceeded the design requirements. What steel is this made of? It is fiberglass, or to be more precise, it is made of glass and plastic.

Glass is a hard and brittle material that breaks when dropped. If you add plastic to the glass and combine them together, it can be as good as steel!