... ProcessSelecting, Embryo Extracting, Grinding, Perforating, Bleaching, Gloss, Quality Control And PackagingSizesStandard Sizes are 10L to 44L. Some shell ... MWCustom-made R & D, Faster Sampling, Quantity and Quality Ensured, Effective CommunicationButtons Types>Abalone / Awabi Shell Buttons ( ... #17.78280#409#380#408# pearl buttons,jean button, button for garment,resin button,plastic button,buckle