Who We Are Peyvand Sanat Danesh Company (PSD), is a trusted provider of leading manufacturing of automation wire harness and electronic products. With industrial original equipment manufacturers ("OEM") and maintenance, , Unlimited Services has experience manufacturing wire harness and cable assemblies for many different markets and industries. This broad industry experience allows you to benefit from the vast knowledge of components and manufacturing techniques that Unlimited Services works with. Today as equipment and machinery moves to higher technology electronic controls wire harness and cable assembly needs are evolving as well. You need a wire harness and cable assembly manufacturer who has the product capabilities to work with the new high technology components and cross market applications.