色偷偷AV老熟女色欲涩爱18_久久久国产精品_乱子伦一区二区三区_欧美丝袜高跟aⅴ片
<small id="2cueg"><tbody id="2cueg"><small id="2cueg"></small></tbody></small>
<track id="2cueg"><tbody id="2cueg"><small id="2cueg"></small></tbody></track>
phone：
13946366759
TEL：
13845345168 13614630059 18920329525 13910253562
English
中文簡體
Welcome to the website of Mudanjiang Zhongyuan Drilling Co., Ltd.!
HOME
plains
Brief Introduction
Chairman
Historical evolution
corporate culture
CERTIFICATE
Product
Drilling Tools
Fishing Tools
Milling Tools
Workover Tools
Cementing tool
Display board images
News
News
R & D Center
Maintenance
The Factory
network
contact us
location：
HOME
>
R & D Center
News
News
R & D Center
Maintenance
07
2024-06
Drill bit technology develops in tandem with drilling activities
New type of rotary guide device Recently, there has been an increasing emphasis on the research of drill bits that can be used in rotary steering drilling systems (RSS). These types of drill bits make it possible to design more complex wellbore shapes,
07
2024-06
Product
Drilling Tools
Fishing Tools
Milling Tools
Workover Tools
Cementing tool
Display board images
Navigation
plains
Product
News
The Factory
network
contact us
Copyright ? 2024-2026 牡丹江中原鉆采有限公司 版權(quán)所有
備案號：黑ICP備09001002號
黑公網(wǎng)安備 23100402000053號
