Zhejiang Hutu Silicon Co., Ltd

CALVO SEALING Is a Spanish company with more than fifty years of experience in manufacturing sealing and thermal insulations products. We are currently present in many different industrial areas such oil&gas, process, naval, cement, food, casting.

RUNFLOW is an integrated company that specializes in the design, production, sales, and service of automated valves. In 2006, it partnered with NIPPON VALVE SYSTEMS, INC in Japan to provide Imported valves, electric needle valves, small electric valv