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yuan4dYUAN4D LOGIN. Pusat Bantuan Order & Pembayaran Pembatalan Pesanan Pengiriman Pengembalian Barang & YUAN4D Hubungi kami di Live Chat (24 Jam) SITUS4D. SLOTFour-dimensional (4D) printing ceramics is a challenge due to their weak deformability. Here, the authors report a hydrogel-dehydration-driven direct 4D printing