We can customize various types and sizes of adhesives with different viscosities according to customer requirements. Regarding the quality standards and pricing of adhesives, please explain the following to customers: For bulk 20KG and packaged adhesives, they are divided into three major categories: A (A a-a, a-b, a-c), B, and C. The differences between each grade are as follows: For ABC grade quotations (viscosity below 2–500 CPS), the price is the same. We utilize our production equipment and various processes to manufacture adhesives tailored to different customers. Category A, Grade A: FDA-compliant adhesive. (a-a) Grade: Raw materials are imported and specially imported Japanese technology (selecting the best portion of adhesive during production). High production cost, 100% solid content, high and durable bonding strength, long shelf life (1–3 years) with minimal changes, environmentally friendly and non-toxic. Free of harmful solvents. Complies with European ROHS, REACH, and related environmental standards. (USD/16KG) (a-b) Grade: Raw materials are imported and generally imported Japanese technology (selecting most of the better adhesive during production). Relatively high production cost, 99.97% solid content, high and durable bonding strength, long shelf life (1–3 years) with minimal changes, environmentally friendly and non-toxic. Free of harmful solvents. Complies with European ROHS, REACH, and related environmental standards. (USD/13KG) (a-c) Grade: Raw materials are imported and generally imported Japanese technology (selecting most of the adhesive during production). High production cost, 99.9% solid content, high and durable bonding strength, long shelf life (1–2 years) with minimal changes, environmentally friendly and non-toxic. Free of harmful solvents. Complies with European ROHS, REACH, and related environmental standards. Category B: Raw materials are domestic and produced with general processes (selecting most of the adhesive during production). Moderate production cost, relatively high bonding strength, long shelf life (6 months–1 year). Complies with general environmental standards. Solid content 97%–99%, relatively high strength, long shelf life. Category C: Raw materials are domestic and produced with general processes (selecting most of the adhesive during production). Moderate production cost, relatively high bonding strength, long shelf life (6 months–1 year). Complies with general environmental standards. Solid content 90%–99%, relatively high strength, moderate shelf life.