"Harbor Black Oxide, Inc. has been the only coating company we have ever worked with. They have never given us a reason not to. Always top quality and on time." Geary Garvison, Owner Winn Archery Equipment Co. South Haven, MI "During the past 10 years, Dane Systems has been very pleased with the qua...

"During the past 10 years, Dane Systems has been very pleased with the quality of work and services that Harbor Black Oxide, Inc. has provided. Harbor Black Oxide, Inc. is very responsive to our needs and provides quick turnaround, usually within one to two days." Steve Harder, COO Dane Systems, Inc...

"During the past 10 years, Dane Systems has been very pleased with the quality of work and services that Harbor Black Oxide, Inc. has provided. Harbor Black Oxide, Inc. is very responsive to our needs and provides quick turnaround, usually within one to two days." Steve Harder Dane Systems, Inc. Ste...

"Jus-Rite Engineering, Inc. is extremely satisfied with the quality of product and expediency of service of Harbor Black Oxide, Inc. There are other suppliers that are located closer to Jus-Rite, but we feel that the quality and service received from Harbor Black Oxide, Inc. is well worth the extra ...