Mannatech, a provider of naturally sourced supplements and SP Express have entered into a services agreement that will expand Mannatech's warehousing and distribution capabilities.

The agreement will add two additional strategically placed distribution centers on both the East and West coasts in the US. Mannatech currently has a warehouse in Dallas.

Mannatech CEO and chief science officer Rob Sinnott said the agreement provides the opportunity for the company to provide faster delivery service to its customers, along with achieving more efficiency with its US-based transport and logistics.

SP Express is a provider of third-party logistics and order-fulfilment services for a broad spectrum of businesses across multiple channels and industries in the US.

Mannatech develops health, weight and fitness and skin care supplements.