1. Patent license customization: full commercial application; 2. Customers: pharmaceutical companies, DNA engineering R&D institutions of agricultural biological and biotech companies; 3. Kit & plasmid; low prices have led to the popularization of Red/ET in academia; 4. Almost all major pharmaceutical and biotech companies are using Red/ET recombineering technology. 5. More than 400 academic laboratories are using Red/ET recombineering technology.