Woocommerce variation replacing period with a hyphen - wordpress

Question

I've a Woocommerce variation table. It shows each variation in table with respective info, it's working almost properly but I don't know why, it's replacing period with hyphen and even front slash with hyphen.
6.5 becomes 6-5. N/A becomes n-a. Image is attached be low
Here's my code
global $product, $post;
$variations = $product->get_available_variations();
$gcounter = 1; ?>
<table>
<thead>
<tr>
<th scope="col" class="model-class"><b>Model</b></th>
<?php foreach($product->get_available_variations() as $variation ){
$variation_id = $variation['variation_id'];
foreach( $variation['attributes'] as $key => $value ){
$taxonomy = str_replace('attribute_', '', $key );
$taxonomy_label = get_taxonomy( $taxonomy )->labels->singular_name;
$term_name = get_term_by( 'slug', $value, $taxonomy )->name;
?>
<th>
<b><?php echo $taxonomy_label;?></b>
</th>
<?php
} ?>
<th scope="col"><b>Price</b></th>
<th scope="col" width="250"><b>Qty</b></th>
</tr>
<?php if ($gcounter == 1) {
break;
} ?>
<?php } ?>
</thead>
<?php
foreach ($variations as $key => $value) {
?>
<tbody>
<tr>
<td class="model-class">
<?php $variation_sku = get_post_meta( $value['variation_id'] , '_sku', TRUE ); ?>
<?php echo $variation_sku ;?>
</td>
<?php
if(!empty($value['attributes'])){
foreach ($value['attributes'] as $attr_key => $attr_value) {
$taxonomy = str_replace('attribute_', '', $attr_key );
$taxonomy_label = get_taxonomy( $taxonomy )->labels->singular_name;
$term_name = get_term_by( 'slug', $value, $taxonomy )->name;
?>
<td class="<?php echo $taxonomy;?>">
<b><?php echo $attr_value;?></b>
</td>
<?php
}
}
?>
<td class="price">
<?php if ( is_user_logged_in() ) {
if ($value['price_html']){
echo $value['price_html'];
} else {
echo '£'.number_format((float)$value['display_regular_price'], 2, '.', '');
}
} else {
echo 'Call/Enquire for prices';
}
?>
</td>
<td class="quantity">
<form id="addtocart" name="addtocart" class="variations_form cart"
action="<?php echo esc_url( $product->add_to_cart_url() ); ?>" method="post"
enctype='multipart/form-data' data-product_id="<?php echo absint( $product->id ); ?>"
data-product_variations="<?php echo htmlspecialchars( json_encode( $product->get_available_variations() ) ) ?>">
<input type="hidden" name="variation_id" value="<?php echo $value['variation_id'];?>" />
<input type="hidden" name="product_id" value="<?php echo esc_attr( $post->ID ); ?>" />
<input type="hidden" name="add-to-cart" value="<?php echo esc_attr( $post->ID ); ?>">
<?php
if(!empty($value['attributes'])){
foreach ($value['attributes'] as $attr_key => $attr_value) {
$taxonomy = str_replace('attribute_', '', $attr_key );
$taxonomy_label = get_taxonomy( $taxonomy )->labels->singular_name;
$term_name = get_term_by( 'slug', $value, $taxonomy )->name;
?>
<input type="hidden" id="<?php echo $taxonomy; ?>" data-attribute_name="<?php echo $attr_key?>"
name="<?php echo $attr_key?>" value="<?php echo $attr_value;?>">
<?php
}
}
?>
<?php
if ( $product->is_sold_individually() ) {
$product_quantity = sprintf( '1 <input type="hidden" name="cart[%s][qty]" value="1" />', $cart_item_key );
} else {
$product_quantity = woocommerce_quantity_input( array(
'input_name' => "quantity",
'max_value' => $product->get_max_purchase_quantity(),
'min_value' => '1',
'product_name' => $product->get_name(),
'input_value' => '1',
), $product, false );
}
echo apply_filters( 'woocommerce_cart_item_quantity', $product_quantity, $cart_item_key, $cart_item ); // PHPCS: XSS ok.
?>
</form>
<div class="yith-ywraq-add-to-quote add-to-quote-addons-<?php echo $product_id ?>"
<?php echo $data_variations ?>>
<a href="#" class="add-request-quote-button button alt"
data-product_id="<?php echo $value['variation_id']?>"
data-wp_nonce="<?php echo wp_create_nonce(); ?>">Add to quote</a>
</div>
<?php if ( is_user_logged_in() ) { ?>
<button type="submit" onclick="document.addtocart.submit()" class="single_add_to_cart_button button alt"
form="addtocart"><?php echo apply_filters('single_add_to_cart_text', __( 'Add to cart', 'woocommerce' ), $product->product_type); ?></button><?php } ?>
</td>
</tr>
<?php
} ?>
</tbody>
</table>
This is how it looks on backend