Industrial plastic molding machines are SHENZHOU machines that make many things out of plastic. They do this by heating tiny pieces of plastic until they melt, then pushing the molten plastic into a special shape, called a mold. These machines are found in many locations, where they make things, such as toys and car parts.
The technology in those preform molding machine machines is neat. They heat and pressurize the plastic until it melts, then squirt it into the mold. The mold forms the final shape of the product. The plastic is left until it cools and hardens, then the mold opens and the product is removed.