In Hunan, new export orders for smart watches, bracelets, car touch screens have increased dramatica...
ADD TIME:2019-09-17
PA6 Chinese name polyamide, English name (abbreviated as PA), is the main molecular chain contai...
ADD TIME:2017-04-17
Caustic soda in the water treatment industry has been widely used as neutralizing agent, various sal...
ADD TIME:2017-04-17
1 production of paper pulp and cellulose pulp;
2 used in the production of soaps, synthetic detergent...
ADD TIME:2017-04-17