大战熟女丰满人妻AV,18禁免费久久久久久久,人妻互换AV无码打压3p,国产 婬片A片AAA片欧美,成人欧美一区二区三区黑人动态图
ABOUT US

Milestones
About Us Resume of Founder Corporate Structure Contact Us Honorary certificates
Sept 2019
The strategic cooperation between the company and Tsinghua University (School of materials) was officially signed.
Feb 2019
The company won the "2018 leading enterprise of high quality development"
May 2018
The company is recognized as a "high-tech enterprise".
Sept 2017
Through CNAs (National Laboratory Accreditation) expansion, renewal audit.
Aug 2017
Rio Tinto transfers all intellectual property rights, patents and trademarks of Hismelt technology to Meron.
Jul 2017
Pass special equipment manufacturing license (TS) renewal audit.
May 2016
The company's products are awarded the honorary title of "Shandong famous brand".
Jan 2016
The cylinder pipe products of the company have passed the factory approval assessment of BV.
Sept 2015
The company successfully passed the energy management system audit.
Nov 2014
The company's experiment center was officially approved by CNAs (Registration No.: CNAS L7225)
Aug 2013
The 90 ton electric furnace project of the company has been successfully tested.
Jan 2013
Maolong new material technology development Co., Ltd. was completed and put into operation.
Jul 2012
It was selected into the list of 100 key projects of "two districts" of blue and yellow in Shandong Province in 2012.
Jun 2012
The company won the title of "top 100 mechanical industry enterprises of Shandong Province" in 2011.
May 2012
Expert mobile workstation established in cooperation with Northeast University.
Feb 2012
It was awarded the honorary title of Weifang human resources social security integrity demonstration unit in 2011.
Jan 2012
The company was awarded the honorary title of Weifang integrity demonstration enterprise.
Dec 2011
The company's oil well pipe, oil well pump and oil well pumping unit won the title of Shandong famous brand.
Nov 2011
The trademark of the company "Molong group" is recognized as a well-known trademark in China.
Nov 2011
The company has been awarded the honorary title of "China's leading industrial enterprise".
Mar 2011
The company is rated as a class a supplier of seamless fluid pipe by CNPC.
Mar 2011
Has completed the corrosion test of 9Cr anti-corrosion oil well pipe material and the corrosion test of nickel plated sucker rod.
Dec 2010
180 oil special management transformation project officially put into operation.
Oct 2010
Shandong Molong A shares began to be subscribed, with the issuing price of 18 yuan / share.
Aug 2009
Shandong Molong "high steel oil casing project" and "special diameter and high resistance casing project" passed the expert group appraisal.
Jan 2009
Shandong Molong received the notification of winning the bid from China Petroleum Materials Company and won the 88666 ton oil casing order.
May 2008
Shandong Molong imported the most advanced oxygen, nitrogen and hydrogen NCS ONH 2000 gas analyzer from Germany.
Jan 2008
Shandong Molong has completed API certification again. And obtain API certificate.
Feb 2007
The company successfully completed the transition from gem to main board listing (Stock Code: HK568).
Mar 2006
Shandong Molong 250000 tons of oil hot rolling seamless pipe production line has been successfully commissioned.
2005
The company plans to build Baolong new material project with a total investment of 360 million yuan.
Apr 2004
H shares of Shandong Molong Petroleum Machinery Co., Ltd. were officially listed and traded on the gem of Hong Kong stock exchange.
2003
Shandong Molong invested 60 million yuan in the industrial park to build a 60000 ton oil well pipe project.
1999
Shandong Molong has been confirmed as a member of China's petroleum material and equipment export network.
Jan 1996
Meron has passed the ISO9000 quality management system certification and obtained the certification certificate.
1994
Establishment of Shandong Molong Group Corporation.
1992
Shouguang petroleum machinery factory was renamed as Weifang Molong Industrial Corporation.
1991
Shouguang petroleum machinery factory has applied for registration of "Meron trademark".
1987
Set up Shouguang petroleum machinery parts factory, engaged in production and sales of petroleum machinery parts.
亚洲天堂精品成AV无码在线观看 | 中国女人和男的黄色视频 | 精品人妻伦一二三区蜜桃牛牛影视 | 成年人黄色视频在线观看 | 色婷婷AV一区二区三区大白胸 | 粉嫩av婬片一区二区三区 | 91人妻无码成人精品一区 | 涩涩爱美女性生活视频 | 粉嫩粉嫩的虎白女18在线软件 | 国产 成年妇 视频下载 | 多毛熟女HDVido多毛的简介 | 亚洲AV乱码一区二区三区人人爱 | 国产熟妇搡BBBB搡BBBB搡 | 日韩人妻无码一级毛片欧美潘金莲 | 91久久久精品国产一区二区蜜臀 | 亚洲无 码A片在线观看麻豆 | 四川寡妇BBB搡BBB | 久久水蜜臀亚洲AV无码精品 | 农村乱视频一区二区三区 | 户外露出自慰一区二区 | 中文字幕乱码AV在线 | 欧美.亚洲.日韩.另类. | 亚欧精品视频在线观看 | 一本大道无码一区二区天天爽 | 女教师国产又大又粗免费看A片 | 天天日天天干天天日 | 精品人伦一区二区三区蜜桃免费 | 搡老熟女一区二区三区在线视频 | 搡老女人老熟女91老熟女综合网 | 国产精品无码ThePron老人 | 日韩中文字幕电影在线观看 | 亚洲精品乱码久久久久久皂宅 | 少妇的嫩苞一级A片 | 肏逼暴操黑丝骚逼后入内射视频播放网站 | 欧美日韩一区二区在线 | 福利午夜无码AAA片不卡夜色 | www.maopian | 少妇大屁股白浆流出白浆 | 免费看黃色AAAA片 | 人人看人人澡人人做 | 久久9精品区-无套内射无码 |