最近免费中文字幕mv在线视频3,国产真人无码作爱免费视频APP,日本工囗漫画h无遮挡全彩,厨房一次又一次的索要

Ningbo Zhonghai Fastener Manufacturing Co., LTD., founded in 2004, is located in Zhenhai Jiulong Lake Scenic Area, Ningbo, Zhejiang, covering an area of more than 8000 square meters. The company strictly in accordance with ISO9001-2015 system standards, all-round control of product quality, specializing in the production of dental rods, outer hex bolts, hex nuts, teeth. Production standards are national standard (GB), international standard (ISO), American standard (ANSI), German standard (DIN), etc., can also be customized according to customers. Products are widely used in metallurgy, petrochemical, machinery, construction and other industries. We will, as always, implement the "customer first, quality first" principle, sincerely serve the majority of customers, and warmly invite the majority of customers to come to negotiate and guide.

Production of high-strength bolts and various hexagonal nuts, flange nuts, locking nuts and national standard (GB), American standard (ANSI), German system (DIN), British system (BS), Japanese system (JIS), chemical and other standard fasteners, specifications M20 or more, can also be made according to customer requirements non-standard fasteners.