美国毛片一级e片黑人片,baoyu欧美成人免费视频,午夜欧美性欧美,欧美11一12周岁a在线观看,午夜两性剧场,亚洲视频免费在线播放,爱福利视频

Product manufacturing process
1.Pattern design and manufacture2.Wax injection3.Wax and assembling
4.Dipping into ceramic slurry5.Sanding6.Dewaxing
7.Pouring8.Shell removal9.Cutting
10.Gates dressed off and Surface finishing11.Quality inspection12.Finished casting


Copyright ? 2019 Ningbo Etdz Andrew Precision Cast Co.,Ltd TEL:0574-86183696 Manager:Mr.Ge

Design by:nbzzz