久久人妻无码精品一区二区三区,真实的国产乱xxxx在线,亚洲熟妇少妇任你躁在线观看无码,三a级做爰片免费观看

首頁 ? 新聞中心

Company News

發(fā)布日期:2010-11-30


With Liaoning Liangang Dyestuff Chemicals Co. Ltd. continuously development and growth, we expanded the area of factory this year again and increased 4 production lines of 1,8-Naphthalic anhydride and the production capacity reaches more than 1000 tons per year. Now , Liangang Chemicals has becomed the largest production base of 1,8-Naphthalic anhydride in Asia.
 
We had imported advanced automatic manufacturing equipments and utilized the first-class technologies, the purity of 1, 8 - Naphthalic anhydride can reach over 98.5 %. Since the liquid chromatogram and the gas chromatography etc , advaced testing instruments are introduced from Japan, the quality of products is ensured effectively. Our leading product is 3, 4, 9, 10 - Peryleneteracarboxylic dianhydride . Over the years, with increasingly expanding of company production scale , its annual production capacity is more than 600 tons and become the biggest production base and provider in China.
 
The vigorous development of company embodies the painstaking effort and wisdom of all staffs. Hard working, devotion, poineering and enterpriseing is the perfect manifestation of everyone in our company. We would like to advocate the working attitude that keeps improving and strive to make our products to reach world-class level.
首頁

首頁

公司簡介

公司簡介

產(chǎn)品中心

產(chǎn)品中心

聯(lián)系我們

聯(lián)系我們

日韩人妻无码精品无码中文字幕| 国产9 9在线 | 中文| 亚洲国产精品无码久久九九大片| 亚洲精品乱码久久久久66| 久久综合亚洲色hezyo国产| 欧美性69式xxxx护士| 亚洲av无码一区二区二三区软件| 欧美大片免费流量| 欧美日韩国产精品自在自线| 久久久久琪琪去精品色| 日本无翼乌邪恶大全彩h| 亚洲精品日韩一区二区电影| 国产女主播喷水视频在线观看 | 国产欧美久久一区二区三区| 久久精品中文字幕第一页| 欧美13一14娇小性| 亚洲熟女乱综合一区二区| 三上悠亚av作品在线观看| 少妇人妻av| 亚洲精品国产综合久久久久紧| 乱人伦人妻中文字幕无码| 亚洲AV永久无码精品尤物 | 国产suv精品一区二人妻| 人妻 校园 激情 另类| 无敌神马在线观看免费完整一| JLZZJLZZ亚洲乱熟无码| 国产又色又爽又黄刺激视频| 国产一区二区精品久久| 精品香蕉久久久午夜福利| 亚洲精品无码久久久久sm| 欧美日韩人妻精品一区二区三区| 办公室秘书无码激情AV| av中文字幕无码免费看| 最近中文版字幕2019日本| 亚洲精品国产精品乱码视色| 欧美96在线 | 欧| 777色婷婷AV一区二区三| 亚洲精品宾馆在线精品酒店| 天美传媒免费观看一二三在线| 肉乳床欢无码A片动漫AV| 国产精品嫩草影院|