diff --git a/BC20/docs/01 AT/Quectel_BC20_AT_Commands_Manual_V1.0_Preliminary.pdf b/BC20/docs/01 AT/Quectel_BC20_AT_Commands_Manual_V1.0_Preliminary.pdf
new file mode 100644
index 0000000..02af260
Binary files /dev/null and b/BC20/docs/01 AT/Quectel_BC20_AT_Commands_Manual_V1.0_Preliminary.pdf differ
diff --git a/BC20/docs/01 AT/Quectel_BC20_GNSS_协议规范_V1.0_Preliminary.pdf b/BC20/docs/01 AT/Quectel_BC20_GNSS_协议规范_V1.0_Preliminary.pdf
new file mode 100644
index 0000000..209b931
Binary files /dev/null and b/BC20/docs/01 AT/Quectel_BC20_GNSS_协议规范_V1.0_Preliminary.pdf differ
diff --git a/BC20/docs/01 AT/Quectel_BC26&BC20_LwM2M_AT_命令手册_V1.0_Preliminary.pdf b/BC20/docs/01 AT/Quectel_BC26&BC20_LwM2M_AT_命令手册_V1.0_Preliminary.pdf
new file mode 100644
index 0000000..5688412
Binary files /dev/null and b/BC20/docs/01 AT/Quectel_BC26&BC20_LwM2M_AT_命令手册_V1.0_Preliminary.pdf differ
diff --git a/BC20/docs/01 AT/Quectel_BC26&BC20_MQTT_应用指导_V1.1_Preliminary.pdf b/BC20/docs/01 AT/Quectel_BC26&BC20_MQTT_应用指导_V1.1_Preliminary.pdf
new file mode 100644
index 0000000..aec4224
Binary files /dev/null and b/BC20/docs/01 AT/Quectel_BC26&BC20_MQTT_应用指导_V1.1_Preliminary.pdf differ
diff --git a/BC20/docs/01 AT/Quectel_BC26&BC20_OneNET_应用指导_V1.0_Preliminary.pdf b/BC20/docs/01 AT/Quectel_BC26&BC20_OneNET_应用指导_V1.0_Preliminary.pdf
new file mode 100644
index 0000000..0451b1a
Binary files /dev/null and b/BC20/docs/01 AT/Quectel_BC26&BC20_OneNET_应用指导_V1.0_Preliminary.pdf differ
diff --git a/BC20/docs/01 AT/Quectel_BC26&BC20_TCP(IP)_AT命令手册_V1.1_Preliminary.pdf b/BC20/docs/01 AT/Quectel_BC26&BC20_TCP(IP)_AT命令手册_V1.1_Preliminary.pdf
new file mode 100644
index 0000000..78a62f8
Binary files /dev/null and b/BC20/docs/01 AT/Quectel_BC26&BC20_TCP(IP)_AT命令手册_V1.1_Preliminary.pdf differ
diff --git a/BC20/docs/02 Software/Quectel_BC20-OpenCPU_DFOTA_应用指导_V1.0_Preliminary.pdf b/BC20/docs/02 Software/Quectel_BC20-OpenCPU_DFOTA_应用指导_V1.0_Preliminary.pdf
new file mode 100644
index 0000000..1dceaba
Binary files /dev/null and b/BC20/docs/02 Software/Quectel_BC20-OpenCPU_DFOTA_应用指导_V1.0_Preliminary.pdf differ
diff --git a/BC20/docs/02 Software/Quectel_BC20-OpenCPU_Genie_Log_抓取操作指导_V1.0.pdf b/BC20/docs/02 Software/Quectel_BC20-OpenCPU_Genie_Log_抓取操作指导_V1.0.pdf
new file mode 100644
index 0000000..c2cd3bd
Binary files /dev/null and b/BC20/docs/02 Software/Quectel_BC20-OpenCPU_Genie_Log_抓取操作指导_V1.0.pdf differ
diff --git a/BC20/docs/02 Software/Quectel_BC20-OpenCPU_快速开发指导_V1.0.pdf b/BC20/docs/02 Software/Quectel_BC20-OpenCPU_快速开发指导_V1.0.pdf
new file mode 100644
index 0000000..5fbb9d6
Binary files /dev/null and b/BC20/docs/02 Software/Quectel_BC20-OpenCPU_快速开发指导_V1.0.pdf differ
diff --git a/BC20/docs/02 Software/Quectel_BC26&BC20-OpenCPU_低功耗应用指导_V1.2.pdf b/BC20/docs/02 Software/Quectel_BC26&BC20-OpenCPU_低功耗应用指导_V1.2.pdf
new file mode 100644
index 0000000..437718b
Binary files /dev/null and b/BC20/docs/02 Software/Quectel_BC26&BC20-OpenCPU_低功耗应用指导_V1.2.pdf differ
diff --git a/BC20/docs/02 Software/Quectel_BC26&BC20_DFOTA_用户指导_V1.0_Preliminary.pdf b/BC20/docs/02 Software/Quectel_BC26&BC20_DFOTA_用户指导_V1.0_Preliminary.pdf
new file mode 100644
index 0000000..189a60d
Binary files /dev/null and b/BC20/docs/02 Software/Quectel_BC26&BC20_DFOTA_用户指导_V1.0_Preliminary.pdf differ
diff --git a/BC20/docs/02 Software/Quectel_BC26&BC20_TCP(IP)_应用指导_V1.0.pdf b/BC20/docs/02 Software/Quectel_BC26&BC20_TCP(IP)_应用指导_V1.0.pdf
new file mode 100644
index 0000000..1fe41e4
Binary files /dev/null and b/BC20/docs/02 Software/Quectel_BC26&BC20_TCP(IP)_应用指导_V1.0.pdf differ
diff --git a/BC20/docs/03 Hardware/Quectel_BC20-OpenCPU_参考设计手册_V1.0.pdf b/BC20/docs/03 Hardware/Quectel_BC20-OpenCPU_参考设计手册_V1.0.pdf
new file mode 100644
index 0000000..3845cf5
Binary files /dev/null and b/BC20/docs/03 Hardware/Quectel_BC20-OpenCPU_参考设计手册_V1.0.pdf differ
diff --git a/BC20/docs/03 Hardware/Quectel_BC20-OpenCPU_硬件设计手册_V1.0_Preliminary.pdf b/BC20/docs/03 Hardware/Quectel_BC20-OpenCPU_硬件设计手册_V1.0_Preliminary.pdf
new file mode 100644
index 0000000..51432e8
Binary files /dev/null and b/BC20/docs/03 Hardware/Quectel_BC20-OpenCPU_硬件设计手册_V1.0_Preliminary.pdf differ
diff --git a/BC20/docs/03 Hardware/Quectel_BC20-TE-B_用户指导_V1.0.pdf b/BC20/docs/03 Hardware/Quectel_BC20-TE-B_用户指导_V1.0.pdf
new file mode 100644
index 0000000..76afc21
Binary files /dev/null and b/BC20/docs/03 Hardware/Quectel_BC20-TE-B_用户指导_V1.0.pdf differ
diff --git a/BC20/docs/03 Hardware/Quectel_天线设计指导_V3.1.pdf b/BC20/docs/03 Hardware/Quectel_天线设计指导_V3.1.pdf
new file mode 100644
index 0000000..7ab0ad9
Binary files /dev/null and b/BC20/docs/03 Hardware/Quectel_天线设计指导_V3.1.pdf differ
diff --git a/BC20/docs/03 Hardware/Quectel_模块贴片应用指导_V2.6.pdf b/BC20/docs/03 Hardware/Quectel_模块贴片应用指导_V2.6.pdf
new file mode 100644
index 0000000..0a09238
Binary files /dev/null and b/BC20/docs/03 Hardware/Quectel_模块贴片应用指导_V2.6.pdf differ
diff --git a/BC20/docs/04 Common/Quectel_BC20_NB-IoT_模块产品介绍_V1.5.pdf b/BC20/docs/04 Common/Quectel_BC20_NB-IoT_模块产品介绍_V1.5.pdf
new file mode 100644
index 0000000..1f4ee00
Binary files /dev/null and b/BC20/docs/04 Common/Quectel_BC20_NB-IoT_模块产品介绍_V1.5.pdf differ
diff --git a/BC20/docs/04 Common/Quectel_LPWA_模块产品介绍_V2.4.pdf b/BC20/docs/04 Common/Quectel_LPWA_模块产品介绍_V2.4.pdf
new file mode 100644
index 0000000..0b436de
Binary files /dev/null and b/BC20/docs/04 Common/Quectel_LPWA_模块产品介绍_V2.4.pdf differ