|
million farm animals are being carefully tended | |
In its raw form, silk is coated in a kind of glue that stiffens it and makes it coarse to the touch. Not only do domestic silkworms produce larger, whiter cocoons, they make much less of this protein – sericin – which has to be removed as part of the manufacturing process. | |
ผู้ตั้งกระทู้ million farm animals are being carefully tended :: วันที่ลงประกาศ 2022-11-15 13:58:18 |
Copyright © 2010 All Rights Reserved. |
Visitors : 141791 |