- Richang Qiaoshan Trade Co., Ltd. | Richang Qiaoshan Trade Co., Ltd. manufacture No Hub Cast Iron Soil Pipe, No Hub Cast Iron Soil Fittings, No Hub Couplings, Heavy Duty No Hub Couplings, Flexible Rubber Coupling, Flexible Rubber End Cap, Roof Drain, and Floor Drain, Downspout Nozzle and Strainers since 1996. Products/Services : No Hub Cast Iron Soil Pipe, No Hub Cast Iron Soil Fittings, No Hub Couplings, Heavy Duty No Hub Couplings, Flexible Rubber Coupling, Flexible Rubber End Cap, Roof Drain, Floor Drain, Downspout Nozzle, Strainers Amica Building Materials Trading | United Arab Emirates Products/Services : Building materials - plumbing, sanitary, hardware & tools