set page size for new arrival.

@@ -365,9 +365,8 @@ export default class NewArrival extends Component {
                             this.props.onEndReached && this.props.onEndReached();
                         }
                     }}
-                    scrollEventThrottle={300}
-                    initialListSize={40}
-
+                    initialListSize={30}
+                    pageSize={30}
                      onScrollEndDrag={(event) => {
                          if (this.state.showBackToTopButton && event.nativeEvent.contentOffset.y < height) {
                              this.setState({showBackToTopButton: false});