精品国产人亚洲区_亚洲av无码白浆很黄_久久网站免费_欧美黄色a级片_国产精品视频毛片_少妇被黑人4P到惨叫_欧美人妻WWW无码国产黄漫_日本一本二本三区免费2019高清_美谷朱里中文字幕_亚洲精品熟女一二三区

Yanggu Jixing Drilling Tools Co., Ltd established in 2011 is located

 in the Industrial Zone of Yanggu County, Liaocheng City, Shandong Province. 

Our main products include various models of foundation rotary drilling bits, blast furnace cross drilling bits, rock drilling 

bits, road milling teeth, tunneling bits, coal cutter teeth, quick connection drill rods etc. These products are widely used in 

industries such as railways, highways, tunnels, subways, coal mining, geological mining, metallurgy, and water conservancy. 

They are sold in over 20 provinces, municipalities, and autonomous regions, and have also expanded into Europe, Africa, 

South America, the Middle East, and Australia, gaining the right to self-manage import and export.

The company has always focused on scientific, standardized, and systematic management of product quality and passed the 

ISO9001 quality system certification in 2011, effectively ensuring the continuous stability of product quality. 

We hold 28 patents, including invention patents. To guarantee high-quality and efficient supply and service, 

we have introduced experienced engineers with rich R&D expertise, 

and all equipment operates 24 hours a day throughout the year to ensure a large supply capacity.

As a well-known local drilling tools manufacturer, we have always adhered to the "three creations"

creating value for customers, opportunities for employees, and benefits for society. 

The entire company aims to "create world-class drilling tools" and is committed to "

wholeheartedly serving customers,"

 providing high-quality products and satisfactory services to users both domestically and abroad.