亚洲中文字幕无码乱线,亚洲精品无码久久久久久自慰,热久久成人国产精品,在线看日本中文字幕不卡

Ningbo Jiasi Chemical Co., Ltd.

A high-tech chemical enterprise integrating R & D, production and sales
Our main products include: pharmaceutical and pesticide intermediates, non-ionic surfactants with defoaming and wetting effects, liquid crystal and electronic chemicals, photosensitive and photochromic materials chemicals, photoinitiators, etc.
Specializing in unit chemical reactions such as Grignard, Sandmeyer, Friedel-Crafts reaction, bromination, low temperature nitration, reduction, heterogeneous catalytic oxidation, phenol hydroxyl etherification and cyclic condensation, etc.