diff --git a/README.mdx b/README.mdx
index 5b2ff36..e0c4138 100644
--- a/README.mdx
+++ b/README.mdx
@@ -54,6 +54,10 @@ Weight without battery: 151.7 Gram
 Weight with battery: 189.7 Gram  
 ![Drawing](https://github.com/ZitaoTech/Hackberry-Pi_Zero/blob/main/Mechanical_Drawing/Mechanical_Drawing_Q10.png)  
 # <a name='Where to buy  '>Where to buy</a>
+### On Elecrow(ship with battery)
+[BBQ20 keyboard version](https://www.elecrow.com/hackberrypi-zero-with-bbq20-keyboard.html)  
+[BB9900 keyboard version](https://www.elecrow.com/hackberrypi-zero-with-bb9900-keyboard.html)
+### On Tindie
 [BBQ10 keyboard version](https://www.tindie.com/products/zitaotech/hackberrypi-cyberdeck-handheld-with-bbq10-keyboard/)  
 [BBQ20 keyboard version](https://www.tindie.com/products/zitaotech/hackberrypi-cyberdeck-handheld-with-bbq20-keyboard/)  
 [BB9900 keyboard version](https://www.tindie.com/products/zitaotech/hackberrypi-cyberdeck-handheld-with-bb9900-kbd/)