... use are NAK80, P20, 4140, S50C4. We have 15years experience in making rubber moulds, especially for rubber molds of electronic rubber ... rubber parts, toy tires, we are a leading rubber mould maker in China.5. We have our own rubber products workshop, we ... -2weeks, complicated rubber molds like cold runner injection rubber molds in 30days.9. WSR can help customer to run mass production ...