中文字幕人妻无码乱精品,国产精品扒开腿做爽爽爽a片软件,51精品国产人成在线观看,我,我天天要操你的骚逼

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

亚洲色视频手机在线观看| 成人国产av精品免费网| 国产精品黄片| 99蜜桃一区二区三区麻豆| 国产桃色在线成免费视频| 日韩无码三级| 亚洲日产综合欧美一区二区| 成人午夜做爰高潮片免费| 男女嗯嗯的视频在线观看| 亚洲制服中文丝日韩失禁| 久久精品国产首页国产欧美| 国产亚洲精品国产粉嫩av| 色鬼久久爱综合久久鬼色| 亚洲精品一区二区三区99| 亚洲天堂色吧一区二区三区| 尤物蜜芽国?成人精品区| 国产厨房乱子伦午夜视频| 思思久久精品在热线热| 亚欧无成人免费无码专区| 亚洲欧美中文日韩在线观看| 国产日韩精品欧美2020| 成人片午间影院在线播放| 青青草三级在线| 亚洲欧美中文字日韩二区| 国产精品扒开腿做爽爽爽视频| 国产成人不卡在线观看视频| 久久精品 91大神 一区| 亚洲激情学生妹嫩逼嫩乳| 无码熟妇人妻AV在线影片免费| 97视频在线观看免费网址| 欧美午夜精品| 新品精品国产男人的天堂| 一区三区精品久久久精品| 精品一区二区电影在线看| 亚洲av影片国产小情侣| 国产成人午夜精品一区二区三区| 国产精品精品一区二区三区| 日韩欧美人妻区一区二区| 99国产精品免费在线观看| 国产精品亚洲一区二区毛片| 丝袜 美腿 偷拍 亚洲|