一区二区在线 | 欧洲,国产成人精品一区二区三区免费,亚洲av中文无码乱人伦在线咪咕,不知火舞和小男孩

中文版
Welcome to Hubei Microbial Control Biological Technology Co., Ltd

Products

Products

ViewSonic tanning PN

Features:
This product is a new generation of leather tanning agent which is modified on the basis of glutaraldehyde tanning agent. It overcomes the pungent smell of modified glutaraldehyde on the market and the shortcoming of containing a large amount of free formaldehyde. And other active substances were added. As the macromolecular structure to make more than the point of integration, the reaction after the formation of ring-shaped body molecules, and in addition to aldehydes other than the active group, so soft leather, easy oxidation, storage, leather surface meticulous, extensibility Good, with excellent role in dyeing and leveling, into leather wash, sweat and Naisuan Jian, and has a certain role in the filling.

The main performance indicators:
Appearance transparent colorless or pale yellow liquid
Effective content (w / w)> 45%
PH value @ 25 ℃ 6--8
Solubility in water @ 20 ° C Miscible
Specific gravity @ 20 ° C 1.110-1.118 g / ml

Use:
This product is mainly used for leather tanning, chrome tanning leather for pre-tanning, retanning or combination of tanning, but also for fur tanning. It can be used in acidic, neutral or alkaline conditions in an amount of 2 to 5% by weight of shaved leather, and has a pH in the range of 4-5 or 7-8, preferably 7.0. Tanning temperature of 10-40 ℃, the best temperature of 30-35 ℃, liquid ratio between 1-10, the best range of 1-2.5, the turning time of not less than 0.5 hours.
Retanning as an example reference process (to shave leather weight)

Packing: 25KG; 125KG; 200KG plastic drums.



Home

Home

About us

About us

Products

Products

Contact us

Contact us

free嫩白38sex性hd| 亚洲gv钙片在线观看网站| 国产主播直播作爱在线| 9i制作厂麻花| 亚洲国产成人精品综合在线| 日韩成人AV免费在线| 国产亚洲一区二区精品| 欧美囗交视频| 欧美日韩精品一区二区在线观看| 《色戒》未删减版电影在线| 欧美 国产 日韩 在线| 女生操鸡鸡视频在线观看| 国产精品一亚洲av日韩| 欧美亚洲另 丝袜综合网| 18黄禁片免费| 特级片在线| 伊人色吧| 啊同桌嗯轻一点| 国产精品女主播在线观看| 国产亚洲人成网站在线观看| 久久综合九色综合99网| 国产美女被爽到高潮| 熟女黄色网| 亚洲区精品视频| 国产不卡在线看| 亚洲综合久久成人a片| 日韩性爱av在线观看| 好大快用力深一点h视频| 免费观看亚洲人成网站| 中出邻居人妻| 欧美专区第三页| baoyutv在线无码| 久激情内射婷内射蜜桃| 日韩欧美精品网站| 打工女人内毛片| 女性无套免费网站在线看动漫| 成年人国产在线观看| 国产成人盗摄精品a片在线观看| 福利姬自慰喷水一区二区| 18中国性生交xxxxxhd| 天天操夜夜操天天天夜夜天|