狠狠色丁香婷婷久久综合五月,开心五月综合激情综合五月,丁香色情五月综合网站,播五月色五月开心五月网,色婷婷六月亚洲婷婷丁香,丁香五六月婷婷,五月丁香激色婷五月天,开心激情综合网,开心五月丁香花综合网,欧美激情综合五月色丁香,天天操天天插,伊人天天,天天擼一擼,夜夜橾天天橾天天色,天天干,天天操,天天色综合网,天天草天天干,天天操天天操,天天干天天插

Company plant area of 158,000 square meters, heavy industrial plant 58,000 square meters, installed capacity of 2,500 kilowatts, all kinds of processing equipment more than 300 Taiwan / sets, with an annual output of 12,000 tons of large machine tool casting resin sand foundry...

The company has access to more than 60 national patents, as the "Ninth Five-Year" national major scientific and technological achievements technology relying on units; state-level high-tech enterprises; Shandong Province Mechanical Engineering Technology R & D Center ...