https://neuroncrm.blogsazan.com/post/3TUN/5-%DA%A9%D9%84%DB%8C%D8%AF-%D9%85%D9%88%D9%81%D9%82%DB%8C%D8%AA-%D9%82%D8%A8%D9%84-%D8%A7%D8%B2-%D9%BE%DB%8C%D8%A7%D8%AF%D9%87-%D8%B3%D8%A7%D8%B2%DB%8C-CRM