link to us contact us site map about us | contact us | intellectual property policy | privacy policy | terms of use 京icp备 号 京公网安备 home product categories bra cup molding machine bra cups foam bra insert skiving machines foam pad cutting machine laminating machines one piece bra molding machine cnc moulds...
once the delicate plaster moulds have been shaped to satisfaction, they are used to make the master moulds in a durable synthetic resin or in silicone. these are used in turn to make the negative plaster casting moulds. plaster is used because it is porous and absorbs the excess moisture from the porcelain...