Shandong Delong Metal Product Co., Ltd. is a large-scale enterprise integrating manufacturing and trading. The company established in 2000, covering 20,000 square meters. There are 800 employees, including 10 senior engineers, 30 engineers, and 150 professional technicians, 12 production lines. The annual production capacity is more than 4000000 tons, and the pipe circulation is more than 50,00000 tons. All the product has passed ISO9001, CE, TUV, SGS certificate.