Load Product By id or by sku:

 
use  Oro\Bundle\ProductBundle\Entity\Product;
$doctrineHelper = $this->container->get('oro_entity.doctrine_helper');
$productRepository = $doctrineHelper->getEntityRepositoryForClass(Product::class);
$productLoadedById = $productRepository->find(10);
$productLoadedBySku = $productRepository->findOneBySku(‘somesku’);
​

Load products by Ids:
​

 
$productsLoadedByIds = $productRepository->getProductsByIds([2,4,5]);
​

Get Upsell Products:
​

 
use  Oro\Bundle\ProductBundle\Entity\RelatedItem\UpsellProduct;
$upsellProductRepository  = $doctrineHelper->getEntityRepositoryForClass(UpsellProduct::class);
$productId = 10;
$limit = 8;
$upsellProducts = $upsellProductRepository->findUpsell($id, $limit);
​

Get Related Products:
​

 
use  Oro\Bundle\ProductBundle\Entity\RelatedItem\RelatedProduct;
$relatedProductRepository  = $doctrineHelper->getEntityRepositoryForClass(RelatedProduct::class);
$productId = 10;
$limit = 8;
$bidirectional = true;
$upsellProducts = $relatedProductRepository ->findRelated($id, true, $limit);
​

Test Products is newArrival or Featured:
​

 
$isNew = $product->isNewArrival();
$isFeaturesd = $product->getFeatured();
​

Twig Snippets: 

Get Product Images by type:
​

 
{% import 'OroProductBundle::image_macros.html.twig' as Image %} 
{% for productImage in product.imagesByType('additional') %}
          <img src="{{ Image.url(productImage.image, 'product_small') }}" />
{% endfor %}
​

imagesByType('additional') : you can use as parameters main , additional , listing
Image.url(productImage.image, 'product_small') : you can filter which one you size you wanna load 
     'product_large' , 'product_small' , 'product_original' , 'product_gallery_main'

 
Get first product image by type :
​

 
{% set productImage = product.imagesByType('listing').first.image|default(null) %}
{% set productImageUrl = Image.url(productImage, 'product_small') %}
​

Get All Product page URL:
​

 
{% set product_url = path('oro_product_frontend_product_index') %}
​

Get Product view URL:
​

 
{% set product_url = path('oro_product_frontend_product_view', {id: product.id}) %}
​

Get Related Products Ids:
​

 
{% set relatedItemsIds = get_related_products_ids(product) %}
​

get UpSell Products Ids:
​

 
{% set upsellItemsIds = get_upsell_products_ids(product) %}
​