"At Sigma, our mantra is 'customer is number one' and we give quality priority over everything else."
"Our fundamental mission at Sigma is providing customers with the quality they demand, and to accomplish that mission, we aim to earn the trust of our customers as a means to survive in this industry."
Being an independent company also means that we must bear all duties and responsibilities.
It is necessary to devote all our energy to creating a system to guarantee quality.