Concept Sales Inc.

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Contact Us

Phone: (605) 528-2700

CSI Address:
508 Patrick Ave.
Hartford, SD 57033


Providing the highest Quality Plastic Components

CSi works to provide the highest quality plastic components through the companies we represent. Please take time to browse through our site and learn how "The Plastics Professionals" can help you.

DEN HARTOG INDUSTRIES, INC. Producing Ace Roto-Mold, Ace Injection Molding, and Ace Blow-Molding under the corporate Den Hartog Industries banner, DHI has become a nationally recognized leader in the plastics molding industry.

LUNDELL PLASTICS Our advanced thermoforming and UHMW shaping technology allows for the cost effective production of large parts  with minimal tooling costs. This means turning your ideas into reality comes standard with competitive pricing and a quick turnaround time with Lundell Plastics.

SUNRISE FIBERGLASS can handle the long production run or the special, one of a kind project. Their 35,000 sq. ft., state-of-the-art molding facility covers all your molding needs. From the smallest part to a 35-foot Yo-yo, Sunrise is able to handle all your project needs.