Tri-State is a stocking distributor for the following preferred manufacturers:
3M
ACTION MANUFACTURING
PREFORMED LINE PRODUCTS
POWER DELIVERY PRODUCTS
BLACKBURN
PENN UNION
NATIONAL TELEPHONE SUPPLY
SIEMENS ENERGY & AUTOMATION
MILBANK
QUEEN CITY PLASTICS
USCO SWITCHES
NEWMARK INTERNATIONAL
PORCELAIN PRODUCTS
GAMMA INSULATORS
BROOKS UTILITY PRODUCT GROUP