浙江瑞堂塑料科技股份有限公司（簡稱瑞堂科技）成立于2013年，注冊資本1250萬。 公司擁有國內先進的粉末加工技術， 全套的高分子測量儀器， 認證證書齊全（NSF、 UL、 FDA、RoHS等），年產能超過2.1萬噸。
   公司致力于滾塑功能高分子粉末的研發、生產和銷售，主要產品包括LLDPE（線性低密度聚乙烯）、HDPE（高密度聚乙烯）、XPE（交聯聚乙烯）、PP（聚丙烯）、PA（尼龍）、TPO（彈性體）等，還可附加阻燃、抗靜電、抗菌、防霉等功能。除常規改性材料外，公司還生產特殊效果材料、PE發泡材料、PE粘接材料等。公司的材料廣泛應用于冷鏈物流、軍民兩用包裝、   清潔設備、水上休閑、海工航道、農機、工程車輛、游樂、畜牧業、管道防腐等領域。

公司位于中國滾塑的發源地之一浙江省寧波慈溪市，東臨沈海高速，南臨329國道，距離寧波港和寧波櫟社國際機場也很近，交通便利，產業配套齊全。

Zhejiang Rotoun Plastic Technology Corp. (Referred to as Rotoun Technology) was established in 2013, registered capital of 12.5 million. The company has domestic advanced powder processing technology, a complete set of polymer measuring instruments, complete certification certificates (NSF, UL, FDA, RoHS, etc.), and an annual production capacity of more than 21,000 tons.

Our company is committed to the R & D, production and sales of rotomolding functional polymer powder in China. The main products include LLDPE (linear low-density polyethylene), HDPE (high-density polyethylene), XPE (cross-linked polyethylene), PP (polypropylene), PA (nylon), TPO (elastomer), etc. also, we can  add flame retardant, antistatic, antibacterial, mildew proof and other functions. In addition to conventional modified materials, our company produce special effect materials, PE foaming materials, PE bonding materials, etc. Our company materials are widely used in cold chain logistics, military and civil packaging, cleaning equipment, water leisure, marine navigation channels, agricultural machinery, engineering vehicles, amusement, animal husbandry, pipeline anti-corrosion and other fields.

Company locates Cixi City, Ningbo, Zhejiang Province, which is one of the cradles for China Rotational Molding. Cixi City has comprehensive supporting industries and very convenient transportation, Shenhai Expressway (G15) lies on east, and G329 National Highway lies on south, also Cixi City nears by Ningbo Port and Ningbo Lishe International Airport.