we are a big construction chemicals company in china. our main products is : sodium lignosulphonate calcium lignosulphonate potasscium lignosulphonate liquid lignosulphonate sodium gluconate sodium gluconate powder sodium gluconate liquid Sodium Naphthalene Sulphonate Formaldehyde Powder sodium naphthalene sulphonate formaldehyde superplasticizer Liquid naphthalene superplasticizer Polycarboxylate Superplasticizer Powder Polycarboxylate superplasticizer / Liquid Polycarboxylic copolymer contact: vicky Mobile: 0086-18162818098 (what's app is ok) wechat: Lignosulphonate skype: missorange29 email: yongchemical@yahoo.com website:www.yongchemical.com