黑几八干日本女人屄视频,国产麻豆精品一区一区三区,1024你懂的欧美日韩,中国美女操逼一级片网站

Sales Tel:
+86-530-3205777


About Us

 

 

Shandong Stair Chemical Technology Co., Ltd. was established in 2004. Our original factory is located in the middle section of Lijiang Road of Cao County in Shandong Province, with an area of 90,000 square meters and a building area of 22,000 square meters. Now, our new factory is located at No. 1 of Xingda Road of Cao County Chemical Industry Park in Shandong Province, with an area of 180,000 square meters, and a building area of 90,000 square meters. Integrating production, development, and trade, our company is mainly engaged in the production and sales of rubber auxiliaries and other fine chemical products.

With modern technical facilities, strong technical support and complete detection means, we now are a specialized manufacturer of Rubber Antioxidant series, Rubber Accelerant series, Processing auxiliary series, Protective Wax series, as well as pharmaceutical intermediate and other fine chemical products. Up to now, we have successfully certificated to ISO9001:2015 quality management system, ISO14001:2015 international environment system, ISO45001:2018 occupational health and safety management system and ISO/TS16949:2015 quality management system.

Up to now, our company has obtained a number of honors: We are entitled as the State High-tech Enterprise, "Abide by contract with good Credit worthiness" enterprise of Shandong Province and China Customs A Enterprise;Technical center of Shandong Province, Key Engineering Laboratory of Shandong Province, Shandong Province Academician Workstation and so on. Beside these, our products are entitled as the Recommended Brand Product of China Rubber industry Association, Famous Brand Products of Shandong Province and Shandong Province Famous Trademark; Star member of Shandong Province Chemical Industry, Model Enterprise of Heze Intellectual Property, A council unit of China Rubber Industry Association and a Vice Chairman Member of Rubber Auxiliary Branch of China Rubber Industry Association; Golden Bridge Awards of The 8th China Science and Technology Market, Golden Bridge Award Advanced Group of Science and Technology Market of Shandong Province, Information Technology Application Achievement Award of Shandong Province and Energy-saving Advanced Enterprise of Shandong Province.

Adhering to such business principle of "Reputation first, Customer supreme, Mutual Benefit and continuous improvement ", we look forward to establishing a wide range of cooperation with friends all around the world.


骚逼热舞自慰喷水插屁眼| 日本不良网站正能量入口| 欧美亚洲国产日韩一区二区| 日韩在线高清视频一区二区| 人妻换人妻a片爽麻豆| 影音先锋aⅤ无码资源网| 欧美全黄香蕉一线麻豆作性| 日韩在线加勒比av观看| 色欲午夜无码久久久久久| 又色又粗又黄的视频网站| 大 叭插入导出白浆视频| 成年午夜性视频| 床上性生活视频在线观看| 男人叉女人视频| 午夜三级| 午夜国产亚洲精品理论电影| 色喜国模粉嫩大尺度啪啪| 性一交—乱一性一A片在线播放| 亚洲码和欧洲码一二三四| 操逼网址站操快操外国人| 女人被男人吃奶到高潮| 农村老女人乱婬免费视频| 一区2区国产区| 日日摸日日碰夜夜爽97| 国产精品一区二区18禁| 久久夜色精品一区二区三区| 鸡巴插得爽啊 中文字幕| 黄金网站app视频下载大全| 国产肏嫩屄视频| 男女做爰全过程69视频| 啊哈怎么被那么多男生操| 99综合视频| 人妻人妻与人妻人妻AV| av天堂手机版在线观看| 国产偷窥盗拍丰满老熟女| 91性高湖久久久久久久| 色婷婷无码视频在线观看| 国产三级成人不卡在线观看| 大黑屌操孕妇屄| 国产成人高清亚洲一区二区| 欧美精品一二|