General Projects: Intelligent Control System Integration; Door and Window Sales; Metal Door and Window Construction; Door and Window Manufacturing and Processing; Metal Products Sales; Metal Chain and Other Metal Products Sales; Metal Chain and Other Metal Products Manufacturing; Metal Products Research and Development; Metal Products Repair; Metal Materials Sales; Mining Machinery Sales; Mining Machinery Manufacturing; Material Handling Equipment Manufacturing; Material Handling Equipment Sales; Weighing Equipment Manufacturing; Weighing Equipment Sales; Instrument and Meter Manufacturing; Instrument and Meter Sales; Environmental Protection Equipment Manufacturing; Environmental Protection Equipment Sales; Metal Structure Sales; Industrial Automatic Control System Equipment Sales; Industrial Automatic Control System Equipment Manufacturing; Electronic Equipment Sales; Electronic Equipment Manufacturing; Technical Services, Technical Development, Technical Consultation, Technical Exchange, Technology Transfer, Technology Promotion