Kei te Tāone o Zhongshan, Porowini o Guangdong, te kamupene Zhongshan Rizda Castor Manufacturing Co., Ltd., tētahi o ngā tāone matua o te Pearl River Delta, e kapi ana i te rohe neke atu i te 10000 mita tapawha. He kamupene hanga wira me ngā wira hurihuri ngaio hei whakarato i te whānuitanga o ngā rahi, ngā momo me ngā momo hua ki ngā kiritaki mō ngā momo tono. Ko te kamupene o mua ko BiaoShun Hardware Factory, i whakatūria i te tau 2008, ā, he 15 tau te roa o te wheako ki te hanga me te hanga ngaio.
He mea hanga ngā wira Castor Hauora ki ngā rauemi rapa hangai rawa, ā, he tino tika ngā peera, he tino marino, he iti te mahi, ā, kāore e kino te papa. He āhuatanga anō hoki ōna: he marino, he ātete ki te kakahu, he māmā te whakahaere, he ngāwari te urungi, he nui te ngāwari, he peera tino marino, he ātete ki te takai, me ētahi atu.
1. Kua whakakikoruatia te whāriki ki te kōrome hei ārai i te waikura, hei whakapaipai hoki i te āhua o te hua.
2. Wira neoprene e pai ana ki te taiao, ātete ki ngā matū, kāore he tānga wira
3 Mā te peera pōro tino tika, ka taea te hurihuri ngāwari me te ngāwari
4. Ka taea te whakamahi i ngā pērai takirua
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| Te Diameter o te Wira & Whānui o te Takahanga | Utaina (kg) | Toki Whakakorenga | Pereti/Whare Matotoru | Teitei Katoa | Rahi o Waho o te Pereti-runga | Te Mokowā o te Pūwero | Te Diameter o te Pūwero | Tau Hua |
| 75*60 | 60 | / | 2 | 103 | 58*70 | 43*53 | 8*10.5 | D1-075S5-200 |
| 100*68.5 | 70 | / | 2.5 | 132 | 64*80 | 43*53 | 8*10.5 | D1-100S5-200 |
| 125*94 | 90 | / | 2.5 | 163 | 75*90 | 52*64 | 8.5*13.5 | D1-125S5-202 |