I wanted to buy 500 pieces of Sachs clutch kit ( disk & cover ) you have for Mercedes Benz truck. The disk part number is 1861410046 , but I dont know the part number of clutch cover. Can give information about your Sachs clutch kit ? Is it produced in China ? Is it under the license of Germany ? How is the quality ? Has this product been produced in Turkey before ? And the last question is the price of disk and cover. Thank you