... head screw.1. standard: AS, or according to our client's requirements.2. size: According to clients3. grade: 4.6, 5 ... We can supply all kinds of bolts as the customer's drawings. >>Our strength on exporting:1.Our company (Suzhou Sudelan ... being used. We exported to world markets, such as U.S.A., Canada, Cuba, Germany, Japan, Singapore, Malaysia and Africa and so ...