Beijing environmental science and technology ltd. Is registered in room 402 on the fourth floor of the 1093 town street office in tunzhou, beijing; specialized instrument manufacturing; metal tools sales; specialized equipment repair; environmental protection monitoring; instrument repair; retail sales of electrical equipment; marine environmental services; installation of general machinery; engineering technical services (except planning, surveying, design, monitoring); marketing of forest products; environmental advisory services; communications equipment sales; wind power technology services; instrument sales; metal products sales; sewing machinery sales; specialized instrument manufacturing; specialized equipment sales; specialized equipment repair of equipment; environmental protection; environmental monitoring; instrument repair; instrument repairing; retail sales of electrical equipment; marine environmental services; installation of general machinery; computer systems servic...