4 Channel Rc Helicopters,Mini Quadcopter Rtf ,Quadcopter Transmitter Zhejiang feishen Vehicle Co.,LTD , http://www.fsrchelicopter.com Recently, Axel Plastics Research Laboratories, Inc. has developed a water-based, semi-permanent release agent, Xtend W-7283A, for open and closed molding of polyester, epoxy, and elastomers. Xtend W-7283A is a water-soluble emulsion that contains no toxic components and can be easily sprayed on a room temperature and heated mold, and it is easy to wipe off.