liuyang yindali fireworks depth co., ltd. was founded in 1996. it is a fireworks enterprise integrating scientific research, production, sales and large-scale fireworks. the company has the national class a combustion qualification and has a group of high-quality professional and technical personnel, senior engineers and senior combustion engineers. in recent years, the company has continuously explored and innovated the setting technology, incorporated more high-tech performance elements, making the setting of fireworks more culturally creative and connotated, and is at the forefront of the industry in interpreting the art of fireworks and spreading the culture of fireworks. roasting machine 1 serial number: 30 people