羟乙基纤维素是一种白色或淡黄色,无味、无毒的纤维状或粉末状固体, 由碱性纤维素和环氧乙烷(或氯乙醇) 经醚化...
INTELLIGENT SCHEDULING SYSTEM
CERAMIC TILE ADHESIVE
IP INTERCONNECTION SYSTEM
RADIO SWITCHING SYSTEM