diff --git a/cmat/Materials/397_CN_T1_004_S4.pdf b/cmat/Materials/397_CN_T1_004_S4.pdf
new file mode 100644
index 0000000..8eb96a1
Binary files /dev/null and b/cmat/Materials/397_CN_T1_004_S4.pdf differ
diff --git a/cmat/Materials/397_MA_S3_905_S2.pdf b/cmat/Materials/397_MA_S3_905_S2.pdf
new file mode 100644
index 0000000..3b2b08a
Binary files /dev/null and b/cmat/Materials/397_MA_S3_905_S2.pdf differ