The registration address of henan zhong zheng chong zheng city industrial district (nord-zheng village) in zheng city, henan province, is the xing city market supervision authority, with legal representatives wang weng sheng's general projects: technical services, technology development, technical advice, technology exchange, technology transfer, technology diffusion; oil and gas technology services; biochemical product technology development; bio-based material aggregation technology development; bio-based materials technology development; critical technology development for residual heat and power generation; processing, manufacture (without dangerous chemicals); manufacture, processing (without dangerous chemicals) of lubricating oils (extra-magnetic anti-rockery materials); sale of lubricants (without dangerous chemicals); sale of plastics; sale of packaging materials and products; manufacture of plastics; manufacture of plastic packagings and packagings; manufacture of specialized chemical products (without chemicals); sale of chemical products (without dangerous chemicals); manufacture of chemical products on a daily basis (in addition to projects authorized by law and under a licence to operate under the law); licensing of chemical-free production projects (without hazardous chemicals) is subject to specific authorization by the relevant authorities)