Shoddy solar water heaters threaten industry reputation: association leader (4)

"Enterprises should open their doors to consumers by letting them visit their plants. Introducing third-party supervision is necessary for brand name businesses," Zhu said.
Solar energy is increasingly in demand in China because it is clean, energy-efficient and cheap. It is estimated that a square-meter solar panel can save about 150 kg of standard coal use annually.
Many local governments have made installation of solar power systems mandatory, and many residential buildings under 12 stories are required to have solar water heaters.