久久天天躁夜夜躁狠狠820175,国产1024香蕉在线观看,中文字幕精品亚洲无线码二区,久久久99久精品久久99综合,国产精品自在自线亚洲,91高清免费国产自产,日日碰日日摸夜夜爽无码,精品国产亚洲亚洲国产,嫩草国产露脸精品国产,欧美日韩视频在线一区二区

Changsha talent Machinery Equipment Co., Ltd. was founded in 2007, is a research &development, production and sailing of engineering machinery parts enterprise. It mainly serves for construction machinery enterprises such as ZOOMLION, SANY and so on, company always adhere to the technological innovation of “wear-resisting pipe” since our company has been founded. after thousands of process improvement and nearly 10000 times the experimental optimization, investing a total of 15 million yuan of funds for scientific research in past 8 years, Talent has made creative breakthrough on the technology of wear-resisting pipe manufacturing, successfully developed a new-style wear-resisting pipe structure and manufacturing technology. Developing a new-style wear-resisting elbow pipe, wear-resisting straight pipe, wear-resisting special pipe .now, our wear-resisting elbow pipe technology has been applied and got more than 50 patents inside China. Talent also applied patents in European, USA, Japan, and so on.