中国xxxx真实偷拍,五月丁香欧美综合亚洲av,免费av欧美国产在钱,日韩精品一区二区三区色欲av

Nantong Acetic Acid Chemical Co., Ltd.
                Food and Feed Additives
                Pharmaceutical and Pesticide ...
                Dye and Pigment Intermediates
                Organic Chemical Raw Material...
Sales Department:
Chu Guofeng +86-19827051668
Jin Wei +86-13912256336
Purchasing Department:
Sha Zihua +86-19827051651
Shao Jinxin +86-15996545309
Nicotinamide
Product name: Nicotinamide
CAS No.: 98-92-0
EINECS NO: 202-713-4
Formula: C6H6N2O
Structure Formula:
M.W.: 122.13
Characters:

White crystalline powder, odorless or almost odorless, bitter taste, little hygroscopicity. Melting point:128℃~131℃. soluble in water and ethanol.

Main Uses:

This product is one of components for coenzyme, can be used for cure pellagra. It also has important significance for metabolism.

    Back
Home | About Us | Products | News | Quality | Nvestor | Contact Us | 中文版
Copyright(C)2015, Nantong Acetic Acid Chemical Co., Ltd. All Rights Reserved. Supported by ChemNet ChinaChemNet Toocle Copyright Notice
少妇挑战3个黑人叫声凄惨| 被夫の上司持久侵犯耻辱 | av视频在线观看| 成品网站w灬源码1688小说| 97成人碰碰久久人人超级碰OO | 亚洲色大成网站www久久九九| 国产精品永久久久久久久久久| 又粗又深又猛又爽的视频| 无码人妻丰满熟妇啪啪网站牛牛 | 老师黑色双开真丝旗袍| 欧美97色伦欧美一区二区日韩| 又黄又爽的无遮挡免费视频人妖| 男男触手play到娇喘产卵憋尿 | 国产情侣一区二区三区 | 国内精品久久久久久99蜜桃| 亚洲一卡一卡二新区无人区| 特级毛片www免费版| 欧美人与鲁交大毛片免费| 高h喷水荡肉自慰爽文np | 国产免费人成在线视频| 久久久久人妻一区精品色欧美| 欧美性xxxxx极品少妇| 闺蜜男友猛撞h花液h深| 日本做床爱全过程激烈视频 | 激烈 痉挛 抽搐 潮喷 mp4| 九色少妇丨porny丨蝌蚪| 国产精品v欧美精品∨日韩| 欧洲freexxxx性| 久久婷婷五月综合97色直播| 双乳被老汉揉搓玩弄a片小说| 日本va欧美va精品发布| 国产jk精品白丝av在线观看| 老公和我弟媳妇出轨咋办| 成 人 免费 黄 色 视频| 欧美 丝袜 自拍 制服 另类| 97久久精品人人澡人人爽| 亚洲熟女色情网中文字幕| 久久精品无码一区二区三区免费 | 把腿扒开让我添30分钟视频 | 欧美特黄a级高清免费大片a片| 伊人婷婷色香五月综合缴缴情|