The cloudy solution - fies on standing.混浊的溶液经静置后澄清.Whether the FIEs can make unified arrangement of the employee Paid Annual Leave or not?企业是否可以统一安排员工休带薪年休假?Resident enterprises include FIEs, domestic enterprises and ent...
Polyurethane elastomers based on glycols ( PEA, PPG PTMG ) , diisocyanate ( TDI ) and chain extender ( E - 300 ) were prepared.以多元醇 ( PEA, PPG,PTMG ),PDI, E300为原料,制备了 PU 弹性体.Polyether - type isocyanate prepolymers are pr...